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 Moreguide(suzhou) fine materials co. ltd
Contact:0512-80972173
Address:21st Building, No.369 Lushan Rd, New District Suzhou China 215129
Sichuan WeiKeqi Biological Technology Co., Ltd.
Contact:86-028-81700200
Address:sichuan Chengdu Qingjiang Zhonglu 63号
website:http://www.hybio.com.cn
Contact:+86 755 26588093
Address:No.9 Linkong West Street, Hengdian Street, Huangpi District, Wuhan City, China.
Chemsky(shanghai)International Co.,Ltd.
Contact:0
Address:0
Huzhou City Linghu Xinwang Chemical Co.,Ltd.
Contact:86-572-3948695/3945236
Address:huzhou
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)