A mild and selective method for the N-Boc deprotection by sodium carbonate
作者:Saïd El Kazzouli、Jamal Koubachi、Sabine Berteina-Raboin、Abderrahim Mouaddib、Gérald Guillaumet
DOI:10.1016/j.tetlet.2006.09.129
日期:2006.11
A cleavage of N-tert-butyloxycarbonyl protection by Na2CO3 is reported. The N-free products are obtained in excellent yields. The compatibility of the method with the presence of acidic or basic groups is demonstrated. The reactions were performed on indole, azaindole, indazole, pyrazole, indolinone, quinolinone, and oxazolone. (c) 2006 Elsevier Ltd. All rights reserved.
Isocyanates, part 5 Synthesis of chiral oxazolidin-2-ones and imidazolidin-2-ones via DMAP-catalyzed isocyanation of amines with di-tert-butyl dicarbonate
作者:Hans-Joachim Knölker、Tobias Braxmeier
DOI:10.1016/s0040-4039(98)02194-7
日期:1998.12
Oxazolidin-2-ones and imidazolidin-2-ones are prepared under mild reaction conditions by DMAP-catalyzed isocyanation of 1,2-aminoalcohols and 1,2-diamines with di-tert-butyl dicarbonate and subsequent cyclization.
Microwave-assisted N-Boc deprotection under mild basic conditions using K3PO4·H2O in MeOH
作者:Srinivasa Reddy Dandepally、Alfred L. Williams
DOI:10.1016/j.tetlet.2008.12.074
日期:2009.3
A simple and efficient method for the deprotection of secondary Boc-protected amino compounds undermildbasicconditions using K3PO4·H2O in MeOH assisted by microwave irradiation has been presented.
提出了一种简单有效的方法,在中等碱性条件下,采用K 3 PO 4 ·H 2 O的MeOH溶液,通过微波辐照,在Boc保护的仲氨基化合物上进行脱保护。