New cyclic phosphine compounds useful as catalyst components for organometallic reactions

摘要

New cyclic phosphine compounds (I) are claimed Phosphine compounds of formula (I) are new. R1, R2 = H, F, Cl, Br, I, 1-18C alkyl or alkoxy, 6-14C aryl or 7-24C aralkyl or alkylaryl; X = S, NR3, PR3 or SiR32; and R3 = H, 1-18C alkyl or alkoxy, 6-14C aryl or 7-24C aralkyl or alkylaryl An Independent claim is also included for a process for the preparation of (I).