Welcome to LookChem.com Sign In|Join Free

Article Doi

DOI: 10.1016/S0022-328X(96)06513-8

Source and publish data:

Journal of Organometallic Chemistry p. 43 - 49 (1996)

Update date:2022-07-29

Topics:

Authors:

Steinborn, DirkSteinborn, Dirk

Yang, LinYang, Lin

Aisa, A.M. AhmedAisa, A.M. Ahmed

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1016/S0022-328X(96)06513-8

[Rh]- ([Rh] = [Rh(dmgH)2(PPh3)]; dmgH2 = dimethylgluoxime), prepared by reduction of [Rh(dmgH)2(PPh3)Cl] with NaBH4 in methanolic KOH, reacts with cis/trans-XCH=CHCH2X (X = Cl, Br) to give the σ-allyl complexes cis/trans-[Rh]-CH2CH=CHX (X = Cl: 2a/b; X = Br: 3a/b) and cis/trans-[Rh]-CH2CH=CHOMe (4a/b). Propargyl halides react with [Rh]- to give [Rh]-CH2C≡CH (6) as well as [Rh]-CH=C=CH2 (7a) and [Rh]-C≡CMe (8). 7a isomerizes to give 8. In contrast, the dimethyl substituted propargyl chloride HC≡CCMe2Cl (9) reacts with [Rh]- to give [Rh]-CH=C=CMe2 (7b) exclusively. The addition of [Rh]- on HC≡CCH2OH (10a) and on HC≡CCH2OSiMe3 (10b) does not proceed regioselectively as the formation of [Rh]-CH=CHCH2OH (11a) and [Rh]-C(CH2OH)=CH2 (11b) show. [Rh]- reacts with HC≡CCH2SiMe3 (13) under addition on the C2 atom and C-Si bond cleavage to give [Rh]-CMe=CH2 (14). All compounds were characterized by 1H-, 13C-and 31P-NMR spectroscopy. With the coupling constant 1J(103Rh,31P) as a measure, the following trend in the tram influence of organo ligands was obtained: alkyl ≥ phenyl ～ vinyl > allyl > allenyl > alkinyl ～ propargyl.

View More

Full text of DOI:10.1016/S0022-328X(96)06513-8

Products guided by the article

Product name:Rh(dimethylglyoximate)2(PPh3)(CH2CH=CHOMe)

Cas No:186708-41-8

186708-41-8

R&D Labs maybe for 186708-41-8

  • Shanghai Profirst Co., Ltd.

    Contact:+86-21-38122007

    Address:2, Lane 1123, Kangqiao Road, Pudong New Area, Shanghai

  • Hangzhou TJM Chemical Trade Co., Ltd

    Contact:86-571-88223276 86-13388481653

    Address:2221#,Boyuexuan,1860# Binsheng Road,Binjiang District, Hangzhou CityZhejiang Province, 310051, P. R. China

  • N&R INDUSTRIES,INC

    Contact:Tel:+86-29-88764861 Fax:+86-29-88764861

    Address:Rm#2107, Block A, Epin Meidao Building, Gaoxin Rd, Hi-Tech Zone, Xi’an, China

  • Xian Lyphar Biotech Co., Ltd.

    Contact:0086-29-89196322

    Address:North of the Fifth Keji Road, Hi-Tech Industrial Zone, Xi'an City, Shaanxi Province, China

  • Ningbo Distant Chemicals Co.,Ltd

    Contact:86-574-27862490,27862438

    Address:5F-3,#54 DaShaNi street,Ningbo,CHINA

Relevant to this article

Hot Product