Chromium-Templated Benzannulation of (畏5-Cyclohexadienyl)Mn(CO)3-Methoxy-Cr(CO)5 Carbenes

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• 作者：Julien Dubarle-Offner ; Fran莽oise Rose-Munch ; Karl-Heinz D枚tz ; Eric Rose ; Anne Sophie Cuvier ; Armen Panossian
• 刊名：Organometallics
• 出版年：2011
• 出版时间：December 26, 2011
• 年：2011
• 卷：30
• 期：24
• 页码：6778-6781
• 全文大小：292K
• 年卷期：v.30,no.24(December 26, 2011)
• ISSN：1520-6041

文摘

Pentacarbonyl{methoxy-[1-(畏⁵-4-methoxy-6-phenylcyclohexadienyl)tricarbonylmanganese]carbene}chromium (5) accessible from (畏⁵-1-bromo-4-methoxy-6-phenylcyclohexadienyl)tricarbonylmanganese (4) and Cr(CO)₆ undergoes a chromium-templated benzannulation with 3-hexyne to give monometallic Cr complex 12 in 60% yield. The key feature of this reaction is the participation of a conjugated double bond of the 畏⁵-cyclohexadienyl-Mn moiety in the [3+2+1] benzannulation reaction. The X-ray structure of complex 12 reveals a syn position of the phenyl group with respect to the Cr tripod, supporting the participation of the Mn moiety in the benzannulation process.