... Tetrahedron Letters. Volume 54, Issue 48, 27 November 2013, Pages 6423–6426. ... Similarly, hydrolysis of 19 (in 3 steps) gave (R)-20 { [ α ] D 20 +5.8 (c 1.0 in CHCl 3 )} 13 in 48% yield over the 3 steps and 95:5 (Z):(E) ratio; 11 SuperQuat 2 { [ α ] D 20 −24.1 (c 1.0 in CHCl 3 )} was ...
[Bull, Steven D.; Davies, Stephen G.; Jones, Simon; Sanganee, Hitesh J. Journal of the Chemical Society - Perkin Transactions 1, 1999 , # 4 p. 387 - 398]