Compounds of formula Ia and Ib
wherein A, B, C and R
1
are described herein.
式Ia和Ib的化合物
其中A、B、C和R1
如本文所述。
US7888376B2
申请人:——
公开号:US7888376B2
公开(公告)日:2011-02-15
Microwave-assisted transamidation of ureas
作者:Tammy C. Wang、Jennifer X. Qiao
DOI:10.1016/j.tetlet.2016.02.103
日期:2016.5
An effective microwave-assisted urea formation from cyclopentyl- or isopropyl-substituted ureas is described. This novel transamidation methodology provided ureas IIa–IIq in good yields via microwave irradiation of the cyclopentyl- or isopropyl-substituted ureas with excess (5–10 equiv) of amines at 150 °C in THF/DMSO.