... Page 4. 4068 BLUMBERGS, ASH, DANIHER, STEVENS, MICHEL, HACKLEY, AND EPSTEIN The Journal of Organic Chemistry Anal. ... The overall yield by this procedure is 40-500/,. (11) C. S. Marvel and M. S. Sparberg, "Organic Synthesea," Call. Vol. ... (12) J. D. Barnhurst, J. Org. ...