Tetrahedron Letters p. 1575 - 1578 (1981)
Update date:2022-08-04
Topics:
Larson, Gerald L.
Prieto, J. Antonio
Hernandez, Antonio
The reaction of 2-t-butyldimethylsilyloxy cycloalkanones (5,6 and 7 membered rings) with carboethoxymethylenetriphenylphosphorane gives almost exclusively the E isomeric Wittig products, whereas reaction with ethyl lithiotrimethylsilylacetate gives predominantly the Z isomers.The Z products show the methine proton at ca. 5.5 ppm, an unusual large chemical shift for this type of proton.
View MoreChongqing Changfeng Chemical Co., Ltd.
website:http://www.changfengchem.com
Contact:+86-23-67896333
Address:30th Floor, Longhu Ziduxingzuo Building A, 1st Branch,YuSong Rd., Yubei District, Chongqing, China
Contact:
Address:
Shanghai Yuantai Chemical Products Co., Ltd
Contact:021--66129803
Address:Chengyin Road,Shanghai,China
Nanjing Yuance Industry&Trade Co., Ltd.
website:http://www.njyuance.cn/
Contact:+86-25-85439097
Address:B1702, Aoti Bldg, No. 130, Aoti Avenue, Nanjing, China
Angelisun(Chongqing) Pharmaceutical Co., LTD.
Contact:+86-23-68030926-816
Address:D1-7 Tech & Entrepreneurs Park, Kecheng Road, Erlang Hi-Tech Areas, Chongqing, China
Doi:10.1016/S0040-4039(02)02613-8
(2003)Doi:10.1070/MC2001v011n03ABEH001429
(2001)Doi:10.1016/S0040-4039(01)92935-1
(1981)Doi:10.1021/jo00335a068
(1981)Doi:10.1007/BF00901831
(1981)Doi:10.1021/jo00335a070
(1981)
