Microwave-mediated solventless synthesis of new derivatives of marine alkaloid Leucettamine B
摘要:
New access to N-alkyl derivatives of the marine alkaloid Leucettamine B are described using two three-step convergent routes. For the formation of the 2-amino imidazolone ring, the key steps involve solvent-free condensations under microwaves and guanylation reactions with non-sterically hindered primary amines. (C) 2002 Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4039(02)00575-0
作为产物:
描述:
dimethyl 2-(n-butylamino)-2-oxoethylcarbonodithioimidate 以
neat (no solvent) 为溶剂,
反应 1.0h,
以77%的产率得到3-(n-butyl)-2-(methylsulfanyl)-3,5-dihydro-4H-imidazol-4-one