Aminohaloborane in Organic Synthesis. VII.1A Directed Aldol Condensation Using Vinyloxyaminochloroborane

Abstract
Vinyloxydichloroboranes (1) are scarcely found in literature2 probably because of certain unstable properties. We have found that some vinyloxyamino-chloroboranes (2), which can be prepared by formal substitution of one chlorine atom of 1 with a diethylamino group, are isolable stable compounds.