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US 11,780,864 B2Granted
Rhenium(V) alkylidyne complexes and methods of use and preparation thereof
AssigneeThe Hong Kong University of Science and Technology
InventorsGuochen Jia, Mingxu Cui
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Abstract
Non-d0 rhenium(V) alkylidyne catalysts useful for catalyzing alkyne metathesis reactions, such as homo- and cross-metathesis of alkynes or diynes, ring closing metathesis and ring-opening metathesis, methods or use, and preparation thereof. The catalysts are stable to air and moisture and tolerate a variety of functional groups in substrates.
Claims18
A rhenium(V) alkylidyne complex of Formula 1:
- wherein L is pyridine, 4-(trifluoromethyl)pyridine, nitrile, or PR1R2R3, wherein each of R1, R2, and R3 is independently selected from the group consisting of alkyl and aryl;
- R is alkyl, phenyl, 2-thiophene, or CH2Ar1, wherein Ar1 is phenyl or o-bromophenyl;
- each of R4 and R5 is independently phenyl optionally substituted with alkyl, CH3, OCH3, F or CF3;
- and
- R6 for each instance is independently a moiety selected from the group consisting of
- wherein * represents the site of the covalent bond to oxygen and ** represent the site of the covalent bond to phosphorous.
3 more elements
Dependencies are inferred from the claim text.