A High-efficiency Preparation,Properties and Structure of (R,S)- and (S,S)-Pyrrolidine-2-carboxylic

来源 :Chinese Journal of Chemistry | 被引量 : 0次 | 上传用户:bassjhnn
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A highly efficient preparative procedure for ( R,S ) and ( S,S ) pyrrolidine 2 carboxylic acid 3,5 dioxa 4 boracyclohepta[2,1 a ;3,4 a ′]dinaphthalen 4 yl esters [namely ( R,S ) BNBAP and ( S,S ) BNBAP] is described and the crystal structure of ( R,S ) BNBAP was obtained. The data indicate that ( R,S ) BNBAP is a spirocyclic inner borate salt with almost normal tetrahedral configuration. This structural form may be the basic reason for their high chemical, optical and thermodynamic stability. A highly efficient preparative procedure for (R, S) and (S, S) pyrrolidine 2 carboxylic acid 3,5 dioxa 4 boracyclohepta [2,1 a; 3,4 a ’] dinaphthalen 4 yl esters [namely (R, S) BNBAP and (S, S) BNBAP] is described and the crystal structure of (R, S) BNBAP was obtained. The data indicates that (R, S) BNBAP is a spirocyclic inner borate salt with almost normal tetrahedral configuration. may the basic reason for their high chemical, optical and thermodynamic stability.
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