The invention relates to a phosphine compound of the formula (1):
wherein R1 is a linear or branched alkyl group having 1 to 5 carbon atoms or a cyclohexyl group; R2 and R3 represent independently a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R4 , R5 , R6 and R7 represent independently a hydrogen atom, a halogen atom, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms and a di-alkyl amino group, each of the alkyl group having 1 to 5 carbon atoms; X represents a functional group that may form a stable bond with phosphorous atom; and with the proviso that a ring or condensed ring may be formed between the members of at least one pair selected from the group consisting of R4 and R5, R5 and R6, and R6 and R7.
本发明涉及一种式(1)的膦化合物:
其中 R1 是具有 1 至 5 个碳原子的直链或支链烷基或环己基;R2 和 R3 独立地代表氢原子或具有 1 至 5 个碳原子的烷基;R4、R5、R6 和 R7 独立地代表氢原子、卤素原子、具有 1 至 5 个碳原子的烷基、具有 1 至 5 个碳原子的烷氧基和二烷基
氨基,每个烷基具有 1 至 5 个碳原子;X 代表可与
磷原子形成稳定键的官能团;但至少可在一对选自 R4 和 R5、R5 和 R6 以及 R6 和 R7 的成员之间形成一个环或缩合环。