Salt-free conditions prevent stereochemical drift from occurring in this reaction. The conversion of an erythro compound to a threo compound in this reaction changes the stereochemistry of the product from Z to E in its Schlosser modification. Either a betaine [BEE-tuh-een] or a compound containing a four-membered ring called oxaphosphetane is the intermediate in this reaction, which begins with a phosphonium salt being treated with a strong base to give an ylide [IL-id]. For 10 points, name this organic chemistry reaction that converts aldehydes or ketones into alkenes.
Salt-free conditions prevent stereochemical drift from occurring in this reaction. The conversion of an erythro compound to a threo compound in this reaction changes the stereochemistry of the product from Z to E in its Schlosser modification. Either a betaine [BEE-tuh-een] or a compound containing a four-membered ring called oxaphosphetane is the intermediate in this reaction, which begins with a phosphonium salt being treated with a strong base to give an ylide [IL-id]. For 10 points, name this organic chemistry reaction that converts aldehydes or ketones into alkenes.
Salt-free conditions prevent stereochemical drift from occurring in this reaction.