Synthesis of Enantiomerically Pure Diethyl 2-Pyrrolidinyl- and 5-0xo-2-pyrrolidinylphosphonates
Synthesis of Enantiomerically Pure Diethyl 2-Pyrrolidinyl- and 5-0xo-2-pyrrolidinylphosphonates
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1992
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Liebigs Annalen der Chemie ; 1992 (1992), 9. - pp. 903-909. - ISSN 0170-2041. - eISSN 1099-0690
Abstract
Enantiomerically pure 3- and 4-substituted phosphonic acid derivatives 5 of pyroglutamic acid were prepared by a Michael addition of the lithiated (+)-camphor derivative 2 to α,β-unsaturated esters and subsequent hydrolysis. The reduction of the lactams 5 with LiBH4/BF3·OEtz afforded substituted phosphonic acid analogues 7 of proline.
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540 Chemistry
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Phosphoglutamic acids,Phosphoprolines,Michael additions,Lactams
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GROTH, Ulrich, Lutz RICHTER, Ulrich SCHÖLLKOPF, 1992. Synthesis of Enantiomerically Pure Diethyl 2-Pyrrolidinyl- and 5-0xo-2-pyrrolidinylphosphonates. In: Liebigs Annalen der Chemie. 1992(9), pp. 903-909. ISSN 0170-2041. eISSN 1099-0690. Available under: doi: 10.1002/jlac.1992199201150BibTex
@article{Groth1992Synth-9874, year={1992}, doi={10.1002/jlac.1992199201150}, title={Synthesis of Enantiomerically Pure Diethyl 2-Pyrrolidinyl- and 5-0xo-2-pyrrolidinylphosphonates}, number={9}, volume={1992}, issn={0170-2041}, journal={Liebigs Annalen der Chemie}, pages={903--909}, author={Groth, Ulrich and Richter, Lutz and Schöllkopf, Ulrich} }
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