A novel catalytic effect of lead on the reduction of a zinc carbenoid with zinc metal leading to a geminal dizinc compound. Acceleration of the Wittig-type olefination with the RCHX2-TiCl4-Zn systems by addition of lead

Kazuhiko Takai, Tadahiro Kakiuchi, Yasutaka Kataoka, Kiitiro Utimoto

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A catalytic amount of lead promotes further reduction of zinc carbenoid (ICH2ZnI) with zinc in THF to give a geminal dizinc compound (CH2(ZnI)2), which is a key intermediate for the methylenation of carbonyl compounds with a CH2I2, zinc, and TiCl4 system.

Original languageEnglish
Pages (from-to)2668-2670
Number of pages3
JournalJournal of Organic Chemistry
Issue number10
Publication statusPublished - 1994


ASJC Scopus subject areas

  • Organic Chemistry

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