Tetrahedron Letters p. 1169 - 1170 (1999)
Update date:2022-08-16
Topics:
Kukase
Fukase
Kusumoto
The propargyloxycarbonyl group readily introduced to both amino and hydroxy groups by using propargyl chloroformate is stable to neat TFA but is readily cleaved at ambient temperature by treatment with Co2(CO)8 and TFA in CH2Cl2 via formation of an alkyne-Co complex. The propargyl ester similarly serves as a good protecting group for carboxy functions.
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