Tag : Le Chatelier’s Principle

Wittig Synthesis of Alkenes

Purpose: To synthesize E,E-1,4-diphenyl-1,3-butadiene via Wittig reaction (Wittig Synthesis) using Benzyl triphenylphosphonium chloride and cinnamaldehyde in sodium methoxide. Reaction Equation(s):2     Procedure:2   A suspension of anhydrous methanol (1.0 mL), benzyl triphenylphosphonium chloride (0.7508 g, 1.9308 mmol), cinnamaldehyde (0.2415 g, 1.8273 mmol, 0.23 mL) and sodium methoxide (2.4 mL, 4.8 mmol, 2M) was stirred at 21˚C for 30 min. The crude product was isolated via semi-microscale vacuum filtration for 15 min. and rinsed with cold methanol and water. The […]