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
Microwave-mediated solventless synthesis of new derivatives of marine alkaloid Leucettamine B
作者:Jean-René Chérouvrier、François Carreaux、Jean Pierre Bazureau
DOI:10.1016/s0040-4039(02)00575-0
日期:2002.5
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.
Eco-friendly synthesis of novel thiohydantoin-type sulfur-containing imidazolinone derivatives from glycine ester
作者:Mustafa Kemal Gümüş、Yiannis Elemes
DOI:10.1007/s10593-018-2247-5
日期:2018.2
derivatives of glycine ester were prepared from methyl glycinate by the known procedure and then they reacted with several amines undermicrowave irradiation without solvent that gave the corresponding glycine amides. By the one-component cyclocondensation, the obtained amide derivatives were transformed into thiohydantoin-type imidazolinones using solvent-freemicrowaveprocedure. All imine-ester derivatives