![Sample our Physical Sciences journals, sign in here to start your FREE access for 14 days]({"type":"image" , "src" : "/sda/110819/TOC-Subject-Sample-2021-Physical-Sciences.jpg"})
Abstract
The effect of catalyst on formation of isomeric ketals from 19-nortestosterone and 19-nor-ethisterone is reported. Regioselectivity has been achieved with metal hydrides as catalyst, reported for the first time, to give 5(10)-ene ketals.
#CDRI communication No. 5396
Notes
#CDRI communication No. 5396
Ketal, 3(R = H): mp,111–13°(115°)6, 1HNMR(400Hz, CDCI3):δ0.76(s,3H, 18-CH3),2.30(s, 1H, 10CH), 3.64(t, 1H, 17-CH, J = 9.2Hz), 3.96(s,4H, CH2-CH2 of ketal group). Mass: 318(M+).
Roussel-UCLAF Neth. Appl. 6,603,268 (Cl, C07c), Sept.19, 1966. Chem. Abstr.66:P65718x.