Ring-closing olefin metathesis for the synthesis of 1,8-diazabicyclo[4.3.0]non-3-ene-7,9-diones
摘要:
A novel method for the efficient synthesis of 1,8-diazabicyclo[4.3.0]non-3-ene-7,9-diones 5 (bicyclic hydantoins) starting from ureas or Z-protected aminoacids has been developed. The key step is a ring-closing metathesis (RCM) reaction of diallyl substituted hydantoins 3 catalyzed by the ruthenium-carbene complex bis(tricyclohexylphosphine)benzilidine ruthenium dichloride (4). (C) 1997 Elsevier Science Ltd.
Ring-closing olefin metathesis for the synthesis of 1,8-diazabicyclo[4.3.0]non-3-ene-7,9-diones
作者:Alexey B. Dyatkin
DOI:10.1016/s0040-4039(97)00286-4
日期:1997.3
A novel method for the efficient synthesis of 1,8-diazabicyclo[4.3.0]non-3-ene-7,9-diones 5 (bicyclic hydantoins) starting from ureas or Z-protected aminoacids has been developed. The key step is a ring-closing metathesis (RCM) reaction of diallyl substituted hydantoins 3 catalyzed by the ruthenium-carbene complex bis(tricyclohexylphosphine)benzilidine ruthenium dichloride (4). (C) 1997 Elsevier Science Ltd.