Synthesis of cyclic organic compounds and metallocenes
AssigneeUnivation Technologies, LLC
InventorsAngela I. Padilla-Acevedo, Roger L. Kuhlman
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Abstract
A method comprising synthesizing a cyclic organic compound via reaction of an unsubstituted or substituted cyclopentene with an unsubstituted or substituted acrylic acid in the presence of phosphoric and/or sulfonic acid reagent to make the cyclic organic compound. Also, a method of synthesizing a ligand for a transition metal, and a related substituted ligand-metal complex and catalyst, from the unsubstituted or substituted cyclopentene and unsubstituted or substituted acrylic acid. Also, the cyclic organic compound, ligand, and substituted ligand-metal complex and catalyst synthesized thereby. Also a method of polymerizing an olefin with the catalyst to give a polyolefin, and the polyolefin made thereby.
Claims10
A method of synthesizing a bicyclo[3.3.0]octene compound, the method comprising (A) contacting a compound of formula (1) (“compound (1)”):
- wherein R1, R2, and R3 are independently H or (C1-C4)alkyl, or R1 and R3 are bonded together to form a (C1-C4)alkylene and R2 is H or (C1-C4)alkyl, with a compound of formula (2) (“compound (2)”):
- wherein R4 is H or (C1-C4)alkyl, in the presence of an effective amount of a phosphoric and/or sulfonic acid reagent and under reaction conditions sufficient to make a compound of formula (3) (“compound (3)”):
- and/or its oxo/R4 regioisomer;
- wherein R1 to R4 are as defined above.
Dependencies are inferred from the claim text.