Molybdenum (II)-and tungsten (II)-catalyzed allylic substitution

…, D Dvorák, DJ Mansfield, P Kocovský

Index: Malkov, Andrei V.; Baxendale, Ian R.; Dvorak, Dalimil; Mansfield, Darren J.; Kocovsky, Pavel Journal of Organic Chemistry, 1999 , vol. 64, # 8 p. 2737 - 2750

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Citation Number: 60

Abstract

The molybdenum (II) complexes Mo (CO) 5 (OTf) 2 (7a),[Mo (CO) 4Br2] 2 (8a), their tungsten (II) congeners 7b and 8b, and bimetallic complex Mo (CO) 3 (MeCN) 2 (SnCl3) Cl (9a) have been found to catalyze the CC bond-forming allylic substitution with silyl enol ethers derived from β-dicarbonyls (eg, 16+ 30→ 46) or from simple ketones (eg, 16+ 32→ 50), aldehydes, and esters as nucleophiles under mild conditions (room temperature, 1-2 h). Methanol, as ...