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Cp2TiCl2-Catalyzed reaction of grignard reagents with isocyanates, formation of carboxamide with rearranged carbonskeleton

✍ Scribed by Yongmin Zhang; Jinlong Jiang; Yongqian Chen

No coin nor oath required. For personal study only.

✦ Synopsis

Isocyanates react with isopropyl or set-butylmagnesium bromide in the presence of a small amount of Cp2TiCl to afford amide5 with normal alkyl group.

A possibl mechanism for this reac 3 ion is proposed.

Cp2TiC12 has recently received more and more attention in organic synthesis.

Cp2TiCl2-catalyzed reaction of Grignard reagents with several kinds of organic substrates 1 . Recently we also described

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