Helvetica Chimica Acta p. 560 - 579 (1986)
Update date:2022-08-04
Topics:
Koller, Manuel
Karpf, Martin
Dreiding, Andre S.
The gas-flow thermolysis of 1-isobutenyl alkynyl or 2-methyphenyl alkynyl ketones were found to lead to phenols and cyclopentenones or to naphthols and indanones, respectively.These conversions involve two cyclization processes so far unknown with α-alkynones; they are interpreted as intramolecular additions of an allylic or a benzylic C,H bond to a triple bond which may occur in two directions.In addition, the cyclopentenones formed by the α-alkynone cyclization, a known carbene process yielding 5-rings, were also found.The available evidence ruled out a carbene process yielding 6-rings.The addition process yielding 5-rings was applied to a short (but low yield) synthesis of methylenomycin B.
View MoreShanghai Balmxy Pharmaceutical Co., Ltd
Contact:0086-21-24206007
Address:Room 402, 15#, No. 909 wangyue Road, shanghai, P. R. China
Shanghai Kefu Chemical Co.,Ltd.
Contact:+86-21-34616196
Address:Room601-602, Xuhui Business Building, No.168, Yude Road, Shanghai
Wuxi Innopal International Trade CO.,LTD
Contact:+86-510-80711901-8003
Address:Room 402,Building 5,Longze Garden,No.17,South huanjiu Road,Yixing City, Jiangsu,China
Shanghai Haoyuan Chemexpress Co., Ltd.
website:https://www.chemexpress.com/
Contact:86-21-58950125
Address:No.3 Building, No.1999, Zhangheng Road, ZhangjiangHighTech Park, Shanghai, P.R.China,201203
Contact:+44 7958 511245
Address:PO Box 469, Manchester, UK
Doi:10.1039/P19810002398
(1981)Doi:10.1016/S0040-4039(00)84936-9
(1986)Doi:10.1016/0008-6215(90)84116-C
(1990)Doi:10.1016/j.ejmech.2019.111764
(2019)Doi:10.1021/ja01163a094
(1950)Doi:10.1002/chem.201003105
(2011)
