79429-00-8Relevant articles and documents
Wittig Reactions of Phosphoniomethylaryl Compounds with Sulfonated Aromatic and Heteroaromatic Aldehydes
Maerky, Michael
, p. 957 - 975 (2007/10/02)
Bis(triphenylphosphoniomethyl)aryl dichloride derivatives react with aromatic or heteroaromatic aldehydes which have a sulfonic or carboxylic group attached to the ring system, to yield stilbene compounds of a betaine-type structure.These betaines are reacted further with various aromatic or heteroaromatic aldehydes yielding asymmetrically substituted derivatives in excellent yields.This new method is widely applicable to the preparation of water-soluble, fluorescent whitening agents of the bis-stilbene type.