Efficient microwave assisted syntheses of 2,5-diketopiperazines in aqueous media.

Molecules

Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, Col. Chamilpa, 62209 Cuernavaca, Morelos, México.

Published: July 2009

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Article Abstract

Aqueous in situ one-pot N-Boc-deprotection-cyclization of N alpha-Boc-dipeptidyl-tert-butyl and methyl esters under microwave irradiation afforded 2,5-diketopiperazines (DKPs) in excellent yields. This protocol is rapid, safe, environmentally friendly, and highly efficient, and showed that the tert-butoxy moiety is also an excellent leaving group for these cyclizations.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6254787PMC
http://dx.doi.org/10.3390/molecules14082836DOI Listing

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