The disclosure provides Group 6 complexes, which, in some embodiments, are useful for catalyzing olefin metathesis reactions. In some embodiments, the compounds are compounds of the following formula (I) wherein: M is a Group 6 metal atom; X is an oxygen atom, ═N—R5, ═N—N(R5)(R5′) or ═N—O—R5, R5 and R5′ independently being various substituents, such as aryl or heteroaryl, each optionally substituted; n is 0 or 1; Rz is a neutral ligand; R1 is hydrogen or an organic substituent; R2 is an aryl or heteroaryl group, each optionally substituted; R3 is an anionic ligand; and R4 is an anionic ligand, such as a pyrrolide, a pyrazolide, an imidazolide, an indolide, an azaindolide, or an indazolide, each optionally substituted.
本公开提供了第 6 族配合物,在某些实施方案中,它们可用于催化烯烃偏合成反应。在某些实施方案中,所述化合物为下式 (I) 的化合物 其中:M 是第 6 族
金属原子;X 是氧原子、═N-R5、═N-N(R5)(R5′) 或 ═N-O-R5,R5 和 R5′独立地是各种取代基,例如芳基或杂芳基,各自任选被取代;n 是 0 或 1;Rz 是中性
配体;R1 是氢或有机取代基;R2 是芳基或杂芳基,各自任选被取代;R3 是阴离子
配体;R4 是阴离子
配体,如
吡咯内酯、
吡唑内酯、
咪唑内酯、
吲哚内酯、氮杂
吲哚内酯或
吲唑内酯,各自任选被取代。