The reaction of allenes with phosphorus(III) compounds bearing a P-NH-(t-Bu) group: isolation of both enantiomers in crystalline form from an achiral system
The reaction of allenes with phosphorus(III) compounds bearing a P-NH-(t-Bu) group: isolation of both enantiomers in crystalline form from an achiral system
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Date
2008-12-08
Authors
Bhuvan Kumar, N. N.
Kumara Swamy, K. C.
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Abstract
Structural characterization of the tautomeric forms of the zwitterions proposed in the phosphine catalyzed transformations of electron-deficient allenes by utilizing a cyclodiphosphazane with a P-NH-t-Bu group and Ph2P(NH-t-Bu) is described. Spontaneous resolution of the products (R and S enantiomers of the crystals) via crystallization is highlighted. © 2008 Elsevier Ltd. All rights reserved.
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Tetrahedron Letters. v.49(50)