Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 87, Issue 23, Pages 15806-15819Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.2c01821
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- JST, CREST program, Japan [JPMJCR21L1]
- JSPS for Invitation Fellowships for Research in Japan [L22527]
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A protocol for the stereodivergent pentafluoroethylation of N-sulfinylimines has been developed using HFC-125 with KHMDS/triglyme. The presence or absence of triglyme enables the selective synthesis of both diastereomers of the pentafluoroethylated amines. This additive-controlled protocol offers a straightforward and cost-effective alternative to the previously reported base-controlled stereodivergent trifluoromethylation using potassium hexamethyldisilazide (KHMDS) versus P4-tBu.
A protocol for the stereodivergent pentafluoroethylation of N-sulfinylimines using HFC-125 with KHMDS/triglyme has been developed. Both diastereomers of the pentafluoroethylated amines can be selectively synthesized based on the presence or absence of triglyme. This additive-controlled protocol allows the KHMDS/triglyme cryptate to be a straightforward and cheap alternative to previously reported base-controlled stereodivergent trifluoromethylation using potassium hexamethyldisilazide (KHMDS) versus P4-tBu.
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