The latter change is offered as strong support for a mechanism pro- posed for the acetal reaction postulating a “vinyl” derivative as an inter- mediate product. 4. This mechanism is elaborated so as to include similar reactions such as those occurring in glucoside and polysaccharide formation. ... [COMMUNICATION FROM THE DEPARTMENT OF INDUSTRIAL AND CELLULOSE CHEMISTRY, MCGILL UNIVERSITY] VINYL DERIVATIVES: THEIR RELATIONSHIP TO ...