Alkali-metal organomagnesiate complexes as catalysts for highly chemoselective crossed-Tishchenko reactions. Issue 19 (30th April 2020)

• Record Type: Journal Article
• Authors: Guo, Zhiqiang; Pang, Tengfei; Wang, Yakong; Zhang, Yongbin; Wei, Xuehong
• Is Part Of: Dalton transactions. Volume 49:Issue 19(2020)
• Page Start: 6418
• Page End: 6424
• Publication Date: 2020-04-30
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/d0dt01114b
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Five heterobimetallic magnesiates bearing bidentate pyrrolyl ligand have been synthesized and their structural features were provided. As catalyst for cross-coupling Tishchenko reaction, they exhibited higher catalytic activities and chemoselectivity. Abstract : Five new heterobimetallic magnesiates bearing bidentate dianionic pyrrolyl ligands have been synthesized through co-complexation with alkali-metal reagents and di- n -butylmagnesium. Single-crystal X-ray structural analysis of these complexes revealed a variety of intriguing bonding modes. These alkali-metal (Li, Na, and K) organomagnesiates were utilized as catalysts for cross-coupling Tishchenko reactions with two different aldehydes. The sodium alkyl magnesiate complex { n BuMg[2-(Me3 CNCH2 )C4 H3 N]Na(Et2 O)}∞ (3 ) was identified as a competent catalyst, as it exhibited higher catalytic activities and chemoselectivity under mild conditions.