发明申请
US20100234601A1 Transition metal catalyzed synthesis of 2H-indazoles 有权
过渡金属催化合成2H-吲唑

Transition metal catalyzed synthesis of 2H-indazoles
摘要:
The present invention relates to a process for the regioselective synthesis of compounds of the formula I, wherein R0; R1; R2; R3; R4; R5; A1; A2; A3; A4, Q and J have the meanings indicated in the claims. The present invention provides a direct transition metal catalyzed process to a wide variety of multifunctional 2H-indazoles or 2H-azaindazoles of the formula (I) from 2-halo-phenylacetylenes or (2-sulfonato)phenylacetylenes and monosubstituted hydrazines.
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