Literature DB >> 16311804

Rapid deprotection of N-Boc amines by TFA combined with freebase generation using basic ion-exchange resins.

Natarajan Srinivasan1, Alexander Yurek-George, A Ganesan.   

Abstract

The deprotection of N-Boc amines was rapidly accomplished using 5 equivalents of TFA in methylene chloride in a focused microwave instrument with irradiation at 60 degrees C for 30 min. The freebase amines are then obtained by scavenging the crude reaction mixture with the basic Amberlyst A-21 ion-exchange resin. This procedure is suitable for the parallel deprotection of N-Boc amines.

Entities:  

Mesh:

Substances:

Year:  2005        PMID: 16311804     DOI: 10.1007/s11030-005-4386-8

Source DB:  PubMed          Journal:  Mol Divers        ISSN: 1381-1991            Impact factor:   2.943


  1 in total

1.  Modern separation techniques for the efficient workup in organic synthesis.

Authors:  Carl Christoph Tzschucke; Christian Markert; Willi Bannwarth; Sebastian Roller; André Hebel; Rainer Haag
Journal:  Angew Chem Int Ed Engl       Date:  2002-11-04       Impact factor: 15.336

  1 in total
  4 in total

Review 1.  Controlled microwave heating in modern organic synthesis: highlights from the 2004-2008 literature.

Authors:  C Oliver Kappe; Doris Dallinger
Journal:  Mol Divers       Date:  2009-04-21       Impact factor: 2.943

2.  Mechanistic investigations and substrate scope evaluation of ruthenium-catalyzed direct sp3 arylation of benzylic positions directed by 3-substituted pyridines.

Authors:  Navid Dastbaravardeh; Karl Kirchner; Michael Schnürch; Marko D Mihovilovic
Journal:  J Org Chem       Date:  2013-01-03       Impact factor: 4.354

3.  Preparation and Chemical Properties of π-Conjugated Polymers Containing Indigo Unit in the Main Chain.

Authors:  Hiroki Fukumoto; Hisashi Nakajima; Takahiro Kojima; Takakazu Yamamoto
Journal:  Materials (Basel)       Date:  2014-03-11       Impact factor: 3.623

4.  Synthesis of Fucose Derivatives with Thiol Motifs towards Suicide Inhibition of Helicobacter pylori.

Authors:  Mark Reihill; Lorenzo Guazzelli; Han Remaut; Stefan Oscarson
Journal:  Molecules       Date:  2020-09-18       Impact factor: 4.411

  4 in total

北京卡尤迪生物科技股份有限公司 © 2022-2023.