Preparation of 1,Z-Dichloropropene-1 BY ERNEST H. HUNTRESS AND F. SANCHEZ-NIEVAI In view of the extent of recent studies of chloro- and polychloro-olefins the paucity of reports on 1,2-dichloropropene is remarkable. This com- pound should exist in two geometrically stereoiso- meric forms. The only record of the lower boiling stereomer is an ancient report2 claiming its prep- aration from 1,2,2-trichloropropane by dehydro- chlorination with alcoholic ...