Two-step asymmetric reaction using the frozen chirality generated by spontaneous crystallization

Org Lett. 2012 May 18;14(10):2638-41. doi: 10.1021/ol301033r. Epub 2012 Apr 30.

Abstract

N,N-diallyl-4-methyl-1-propyl-2-quinolone-3-carboxamide afforded chiral crystals of a P2(1) crystal system by spontaneous crystallization. The molecular chirality in the crystal was retained after the crystals were dissolved in a solvent at a low temperature, and the frozen molecular chirality was effectively transferred to the products by a two-step reaction involving hydrogenation and intermolecular photocycloaddition reactions.