Journal of Organic Chemistry p. 408 - 413 (1988)
Update date:2022-07-30
Topics:
Perez, Daniel G.
Nudelman, N. Sbarbati
The reaction of lithium dialkylamides 1 (dialkyl = dibutyl, dipentyl, dicyclohexyl, 3-oxapentamethylene, and isopropyl cyclohexyl) with carbon monoxide was examined under several reaction conditions.It is shown that the corresponding lithium carbamoyl is the first intermediate and its further reactions can lead to dialkylformamides 2, dialkylglyoxylamides 3, or tetraalkylhydroxymalonamides 4.Dialkylamides were previously assumed to come from hydrolysis of lithium carbamoyls, and these represent an unexplained "island of stability" among the area of acyl anions.Evidence is given that casts doubts on this assumption and suggests that 2 comes from the cleavage of lithium tetraalkylurea dianion.The yields of 2, 3, or 4 obtained by this one-step, rapid procedure are much higher than those afforded by the usual several steps methods of preparation, especially for compounds 3 and 4.Tetraalkylureas, tetraalkyloxalamines, or tetraalkylketomalonamides can be obtained in good yield by the same general procedure, followed by treatment ot the reaction mixture with oxygen after the carbon monoxide absorption has ceased and before the regular workup.
View MoreHebei Fulong Import & Export Co., Ltd.
Contact:86-311-87795661
Address:15A19 Zhongyuan Building,368 Youyi North Street,Shijiazhuang 050070,China
Suqian Ruixing Chemical Co., Ltd.
Contact:+86-527-80805666(总机);84836008(销售)
Address:3 Jingsilu, Zone north, Hubin Xincheng Development Park, Suqian, China
Shandong Tiancheng Chemical Co., Ltd.
website:http://www.tianchengchemical.com
Contact:0537-7927788
Address:No.66 west of Beizhan Road, Yanzhou District
Chongqing Werlchem Fine Chemical Co. Ltd
Contact:+86-23-67521957
Address:NO.15,Fortune Road,Yubei District,401121,Chongqing,China
Shanghai Dianyang Industry Co.,ltd
Contact:+86 21 6492 4669
Address:Chejing RD, Songjiang District, Shanghai, China
Doi:10.1021/ja01566a068
(1957)Doi:10.1021/om801004r
(2009)Doi:10.1002/ejic.200700579
(2007)Doi:10.1002/ardp.198700003
(1987)Doi:10.1021/ja01547a044
(1958)Doi:10.1002/hlca.19590420510
(1959)