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.
Chengdu Shengnuo Biological Technology Co., Ltd.
Contact:86-028-85275045
Address:Sichuan Province Chengdu hi tech Zone Tianfu Avenue North of 1480
ClickChem Technology Co., Limited
Contact:+86-0310-6519966/0531-52893837
Address:No.750 Shunhua Road, High-Tech Zone, Jinan city, Shandong China
Weifang Arylchem Chemical Co., LTD
Contact:86-536-5217866
Address:Development Zone, Shouguang, Shandong Province
shijiazhuang baisheng chem co.; ltd
Contact:86-0311-80790826
Address:shijiazhuang hebei
website:http://www.tcfinechem.com/
Contact:18681346930
Address:baifu town,whou district
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)
