Organic Photoredox Catalysts, Compositions, and Conversion Processes

A conversion process, comprising:

• forming a reaction mixture comprising a substrate and a catalyst composition, the catalyst composition comprising:
• a reductant;
• and
• an organic photoredox catalyst comprising a benzo[a]coronenyl compound represented by formula (I-A):
• wherein:
• each H of formula (I-A) is a hydrogen atom;
• each RB of formula (I-A) is, independently, a C1-C20 unsubstituted hydrocarbyl, a C1-C20 substituted hydrocarbyl, a functional group comprising at least one element from group 13-17 of the periodic of the elements, or two or more RB join together to join together to form a monocyclic ring structure or a polycyclic ring structure;
• x of formula (I-A) is from 1 to 13, and when x is more than 1, each RB is the same or different;
• y of formula (I-A) is from 1 to 13;
• and
• x+y is 14;
• and
• exposing the reaction mixture to light to convert the substrate, under conversion conditions, to a conversion product.

A conversion process, comprising:

• forming a reaction mixture comprising a fluorine-containing substrate and a catalyst composition, the catalyst composition comprising:
• a reductant;
• and
• an organic photoredox catalyst comprising a benzo[a]coronenyl compound represented by formula (I-A):
• wherein:
• each H of formula (I-A) is a hydrogen atom;
• each RB of formula (I-A) is, independently, a C1-C20 unsubstituted hydrocarbyl, a C1-C20 substituted hydrocarbyl, a functional group comprising at least one element from group 13-17 of the periodic of the elements, or two or more RB join together to join together to form a monocyclic ring structure or a polycyclic ring structure;
• x of formula (I-A) is from 1 to 13, and when x is more than 1, each RB is the same or different;
• y of formula (I-A) is from 1 to 13;
• and
• x+y is 14;
• and
• exposing the reaction mixture to light to convert the substrate, under conversion conditions, to a conversion product.