酮醇缩合

S.M. McElvain in Organic Reactions, Vol. 4, p. 256(New York, 1948);
Stoll, Chimia 2, 217(1948); Prelog, J. Chem. Soc. 1950, 450;
Sicher in Progress in Stereochemistry, De la Marc and Klyne, Eds, vol. 3, 202(Butterworth, 19520;
Finley, Chem. Revs, 64, 573(1964);