Journal of Organometallic Chemistry p. 109 - 118 (1982)
Update date:2022-08-04
Topics:
Medvedeva, A. S.
Demina, M. M.
Borisova, A. I.
Margorskaya, O. I.
Kalikhman, I. D.
et al.
Methyl 2-diazo-3-hydroxy-6,6-dimethyl-4-heptynoate was prepared by treating 4,4-dimethyl-2-pentyn-1-al with methyl diazoacetate at room temperature in the absence of catalysts.In the case of related aldehydes, RC<*>CCHO (R=n-Bu, Me3Si, Et3Si, Et3Ge), this unusual reaction is partially or completely suppressed by a competing 1,3-cycloaddition process.The latter leads to a mixture of isomeric 3- and 4-formylpyrazole, one of which cyclodimerizes to form tricyclic hemiaminal.
SHANGHAI GILEADER ADVANCE MATERIAL TECHNOLOGY CO.,LTD
website:http://www.tanguitech.com/contact.asp
Contact:+86-021-58692556
Address:No.6 Building,No. 668 Hengan RD Pudong,Shanghai
Chengdu Yunyi International Trade Co., Ltd
Contact:
Address:china
Wuxi Zuping Food Science And Technology Co.,LTD.
Contact:+86-510-87210822
Address:Guanlin town
Contact:+86-10-67147360/67107388
Address:No.18 Guangming Zhongjie, Chongwen District, Beijing, 100061, China
Contact:+(852) 301-98033
Address:Flat C, 23/F, Lucky Plaza, 315-321 Lockhart Road, Wan Chai, Hong Kong
Doi:10.1039/c8ob02368a
(2018)Doi:10.1021/ja00344a044
(1983)Doi:10.1016/j.ejmech.2004.02.013
(2004)Doi:10.1016/j.bmcl.2005.08.106
(2005)Doi:10.1248/cpb.35.3859
(1987)Doi:10.1055/s-1980-29167
(1980)
