Tag: M.W=400-500

SDS of cas: 3411-48-1. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Gold(I)-catalyzed cyclizations of 1,6-enynes: alkoxycyclizations and exo/endo skeletal rearrangements.

Gold(I) complexes are the most active catalysts for alkoxy- or hydroxycyclization and for skeletal rearrangement reactions of 1,6-enynes. Intramol. alkoxycyclizations also proceed efficiently in the presence of gold(I) catalysts. Examples of the skeletal rearrangement of enynes by the endocyclic cyclization pathway are also documented. Iron(III) is also able to catalyze exo and endo skeletal rearrangements of 1,6-enynes, although the scope of this transformation is more limited. The gold(I)-catalyzed endocyclic cyclization proceeds by a mechanism different from those followed in the presence of PdII, HgII, or RhI catalysts.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, Acta Crystallographica, Section E: Structure Reports Online called trans-Carbonylchloridobis[tris(naphthalen-1-yl)phosphane-P]rhodium(I) acetone trisolvate, Author is Meijboom, Reinout, which mentions a compound: 3411-48-1, SMILESS is C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2, Molecular C30H21P, Related Products of 3411-48-1.

In the title compound, trans-[RhCl{P(C10H7)3}2(CO)].3C3H6O, where P(C10H7)3 is trinaphthylphosphine, the Rh-P bond lengths are 2.3360. The coordination around the Rh atom shows a slightly distorted square-planar arrangement. Crystallog. data and at. coordinates are given.

In some applications, this compound(3411-48-1)Related Products of 3411-48-1 is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Electron spin resonance studies of the reactions of tri(1-naphthyl)phosphine and its oxide, sulfide, and selenide with alkali metals in tetrahydrofuran and 1,2-dimethoxyethane, published in 1970, which mentions a compound: 3411-48-1, Name is Tri(naphthalen-1-yl)phosphine, Molecular C30H21P, COA of Formula: C30H21P.

Tri(1-naphthyl)phosphine (I) was treated sep. with Li, Na, K, and Na-K alloy in tetrahydrofuran (THF) and in 1,2-dimethoxyethane (DME). In both solvents, the reaction of I with Na gave the naphthalene radical anion (II) while with K (•C10H7)2PK%- (II) was formed. Reduction with Na-K alloy gave a mixture of II and III. The reaction of I with Li gave the 1,1′-binaphthyl radical anion, but when the Li was allowed to react initially with glass and then with I, the perylene radical anion was formed. The oxide, sulfide, and selenide derivatives of I all behaved similarly to I in their reactions with the alkali metals in THF and DME. The ESR spectra of the 1,1′-binaphthyl radical anion were also studied.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Product Details of 3411-48-1. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Multicomponent Reaction of Phosphines, Benzynes, and CO2: Facile Synthesis of Stable Zwitterionic Phosphonium Inner Salts. Author is Xie, Pei; Yang, Shoushan; Guo, Yuyu; Cai, Zhihua; Dai, Bin; He, Lin.

The first synthesis of benzyne-derived stable zwitterions is reported. Benzynes generated in situ from 2-(trimethylsilyl)aryl triflates undergo a multicomponent reaction with phosphines and CO2 to produce the stable 1,5-zwitterionic species in moderate to excellent isolated yields, which provides a novel method for the preparation of phosphonium inner salts, e.g. I, under mild and transition-metal-free conditions.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

COA of Formula: C30H21P. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Tri(1-naphthyl)phosphine as a ligand in palladium-free Sonogashira cross-coupling of arylhalogenides with acetylenes. Author is Govdi, Anastasiya I.; Vasilevsky, Sergey F.; Malysheva, Svetlana F.; Kazheva, Olga N.; Dyachenko, Oleg A.; Kuimov, Vladimir A..

Tri(1-naphthyl)phosphine (Np3P) was easily prepared in 34% yield from red phosphorus and 1-bromonaphthalene in superbasic system t-BuONa/DMSO. The expedient procedure for the synthesis of diaryl acetylenes ArC≡CAr1 [Ar = Ph, 4-MeOC6H4, 2-O2NC6H4, etc.; Ar1 = Ph, 4-MeC6H4, 4-BrC6H4, etc.] by Sonogashira coupling of aryl iodides with terminal alkynes using Np3P as a ligand was developed. For the first time, it was found that the reaction with compounds containing electron-donating substituents preferably afforded buta-1,3-diynes ArC≡C-C≡CAr1.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Reference of Tri(naphthalen-1-yl)phosphine. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about Recyclable and reusable Pd(OAc)2/P(1-Nap)3/[bmim][PF6]/H2O system for the addition of arylboronic acids to aldehydes. Author is Zhao, Hong; Cheng, Mingzhu; Zhang, Tinli; Cai, Mingzhong.

A stable and efficient Pd(OAc)2/P(1-Nap)3[tri(1-naphthyl)phosphine] catalytic system for the addition of arylboronic acids to aldehydes was developed. In the presence of Pd(OAc)2 and P(1-Nap)3, the addition reaction of arylboronic acids with aldehydes was carried out smoothly at 65° to give a variety of carbinol derivatives in good to excellent yields using a mixture of [bmim][PF6] and water as the solvent. The isolation of the products was readily performed by the extraction with di-Et ether, and the Pd(OAc)2/P(1-Nap)3/[bmim][PF6]/H2O system could be easily recycled and reused six times without significant loss of catalytic activity. The authors’ system not only avoids the use of easily volatile THF or toluene as solvent but also solves the basic problem of palladium catalyst and these phosphine ligand reuse.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Kou, Yuan; Yin, Yuanqi published an article about the compound: Tri(naphthalen-1-yl)phosphine( cas:3411-48-1,SMILESS:C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2 ).Synthetic Route of C30H21P. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:3411-48-1) through the article.

Hydroformylation of camphene in the presence of [(COD)-RhCl]2 and various phosphine ligands under 10 MPa syngas (CO/H2 = 1), 100 °C has been investigated. The active catalyst has been demonstrated by the IR spectra to be the HRh(CO)Ln (for bidentates, n = 1, for monodentates, n = 2). The selectivity to exo- or endo-products (aldehyde and/or alc.) is found to be decided by the cone angle of the ligand carried by the rhodium carbonyl. The larger ligands such as P(o-tolyl)3 tend to make the rhodium complex approach the double bond from endo side and then to give more exo-alc. because of the attack of the hydrogen occurs from the cis position with the complex. The bidentate phosphine ligands which have relatively smaller cone angles, are expected to give more endo-product. However, the enhanced stability of Rh-Rh bond that arises from the formation of the phosphine-bridged bimetallic rhodium carbonyls limits the formation of the chelated active species, so that only the endo-aldehydes with relatively lower conversion are observed The possible mechanism of exo- and endo-product formations has also been discussed.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Synthetic Route of C30H21P. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: Tri(naphthalen-1-yl)phosphine, is researched, Molecular C30H21P, CAS is 3411-48-1, about The hydroformylation of conjugated dienes. VI. Tertiary aryl- and arylalkylphosphines and secondary alkyl- and arylphosphines as ligands in the rhodium-catalyzed hydroformylation reaction of conjugated dienes to dialdehydes. Author is Bahrmann, H.; Fell, B..

The dependence of the formation of products and isomers on the phosphine used was studied in the title Rh-catalyzed hydroformylation of 1,3-butadiene to dialdehydes. Product formation is directed by a complex combination of steric and electronic factors in the tertiary phosphines. Secondary phosphines are also good cocatalysts for the hydroformylation of butadiene. They lead to an almost complete 1,4-hydroformyl-addition route to the 1,3-diene in the primary step of the hydroformylation of conjugated dienes.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Tri(naphthalen-1-yl)phosphine(SMILESS: C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2,cas:3411-48-1) is researched.Recommanded Product: 2-Aminoquinazolin-4(3H)-one. The article 《Hydrogenation of Secondary Amides using Phosphane Oxide and Frustrated Lewis Pair Catalysis》 in relation to this compound, is published in Chemistry – A European Journal. Let’s take a look at the latest research on this compound (cas:3411-48-1).

The metal-free catalytic hydrogenation of secondary amides for synthesis of amines RCH2NHR1 [R = i-Pr, Ph, 4-BrC6H4, etc.; R1 = Me, Et, Ph, etc.] was developed. The reduction was realized by two new catalytic reactions. First, the amide was converted into the imidoyl chloride by triphosgene (CO(OCCl3)2) using novel phosphorus(V) catalysts. Second, the in situ generated imidoyl chlorides were hydrogenated in high yields by an FLP-catalyst. Mechanistic and quantum mech. calculations supported an autoinduced catalytic cycle for the hydrogenation with chloride acting as unusual Lewis base for FLP-mediated H2-activation.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 3411-48-1, is researched, SMILESS is C1=CC2=C(C=C1)C(=CC=C2)P(C1=CC=CC2=C1C=CC=C2)C1=CC=CC2=C1C=CC=C2, Molecular C30H21PJournal, Tetrahedron Letters called Visible light-induced 4-phenylthioxanthone-catalyzed aerobic oxidation of triarylphosphines, Author is Ding, Aishun; Li, Shijie; Chen, Yang; Jin, Ruiwen; Ye, Cong; Hu, Jianhua; Guo, Hao, the main research direction is arylphosphine light induced phenylthioxanthone catalyzed aerobic oxidation; phosphine oxide aryl preparation.Recommanded Product: 3411-48-1.

The authors report herein a visible light-induced oxidation of triarylphosphines under aerobic condition with excellent functional group tolerance. In this transformation, the photo catalyst 4-phenylthioxanthone acted as a photosensitizer for the in situ generation of singlet O. This new approach provided a cheaper and greener method for the preparation of phosphine oxide, showing great advantages in environmental protocols.

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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis