Organocatalytic synthesis of spiro compounds via a cascade Michael–Michael-aldol reaction
作者:Xavier Companyó、Alex Zea、Andrea-Nekane R. Alba、Andrea Mazzanti、Albert Moyano、Ramon Rios
DOI:10.1039/c0cc01522a
日期:——
The synthesis of spiro compounds via a MichaelâMichael-aldol reaction is reported. The reaction affords spirooxindole derivatives in good yields and in almost diastereo- and enantiopure form. Moreover, the reaction works with several heterocycles such as oxindoles, benzofuranones, pyrazolones or azlactones rendering the final spiro compounds in good yields and excellent stereoselectivities.