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Chemical communications (Cambridge, England)

Ligand accelerated indium(III)-catalyzed asymmetric alkynylation of aldehydes with 2-methyl-3-butyn-2-ol as an ethyne equivalent donor.


PMID 17311130

Abstract

Indium(III)-catalyzed asymmetric alkynylation of aryl, heteroaryl, alkyl and alkenyl aldehydes with 2-methyl-3-butyn-2-ol as an ethyne equivalent donor was realized, and products were obtained in moderate to good yields (up to 97%) and high enantioselectivities (up to 99% ee) using 2-10 mol% of catalyst.

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129763
2-Methyl-3-butyn-2-ol, 98%
C5H8O