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US 11,905,267 B2Granted
High triplet yield phenothiazine donor-acceptor complexes for photoredox catalysis
AssigneesThe Regents of the University of Colorado, a body corporate, Colorado State University Research Foundation
InventorsSteven Sartor, Niels Damrauer, Garet Miyake, Cameron Chrisman, Ryan Pearson
Life of this patent
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Abstract
Phenothiazine compounds of Formula (I) are described herein. These compounds are useful as highly reducing organic photoredox catalysts. Suitable substrates for use with the compounds of Formula (I) include acrylates, styrene, acrylamides, acrylonitrile, vinyl chloride, methylacrylonitrile, vinyl acetate, and acrylic acid.
Claims14
A compound of Formula I:
- wherein:
- each of A1, A2, and A3 is independently an optionally substituted C6-18 aryl,
- wherein the optional substitution is from 1 to 12 groups selected from the group consisting of hydrogen, F, Cl, Br, I, OR, CN, NO, NO2, ONO2, CF3, OCF3, R, N(R)2, SR, SOR, SO2R, SO2N(R)2, SO3R, C(O)R, C(S)R, C(O)OR, OC(O)R, C(O)N(R)2, OC(O)N(R)2, and C(S)N(R)2;
- wherein R is independently at each occurrence hydrogen or C1-10 hydrocarbyl,
- provided that the compound of Formula I is not:
- or salts thereof, wherein G is
3 more elements
Dependencies are inferred from the claim text.