Process for mild esterification of a carboxylic acid with an alc

Details Process for mild esterification of a carboxylic acid with an alc Process for mild esterification of a carboxylic acid with an alc

1990-08-29

1992-09-15

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525434, 560155, 560265, C08F28300, C08C22908, C08C 6708

Patent

active

051479290

ABSTRACT:
The invention relates to a process for mild esterification of a sensitive carboxylic acid, in particular a suitably protected amino acid, with an alcohol component, the esterification according to the invention being carried out in the presence of 2,4,6-mesitylene-1-sulfonyl-3-nitro-1,2,4-triazolide (MSNT) and a weak base in an aprotic and non-basic solvent.

REFERENCES:
Ronald Frank and Renate Doring, "Simultaneous Multiple Peptide Synthesis Under Continuous Flow Conditions on Cellulose Paper Disc as Segmental Solid Supports", Tetrahedron 44, 6031-6040, 1988.

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