Reaktion #1794405

Reaktionsgleichung

benzyl acetate

phenyl isocyanate

carbodiimide

1,3-diphenylcarbodiimide

m-TMI

→

title product

1-Phenyl-3-[2-(3-isopropenylphenyl) -2-propyl]carbodiimide

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.WAITat 2 hours IR showed nearly complete

Vorschrift

We combined 0.0982 g TPAO, 19.30 g benzyl acetate (internal standard), 60.40 g of m-TMI, and 35.77 g phenyl isocyanate. Heating at 150° C. was carried out for 6 hours; at 2 hours IR showed nearly complete conversion of isocyanates to carbodiimides. GC-FID showed that product was predominantly the title carbodiimide (89.3%), unreacted TMI (4.2%), 1,3-bis[2-(3-isopropenylphenyl-2-propyl]carbodiimide (4.2%) and 1,3-diphenylcarbodiimide (2.9%) versus internal standard. Material from this Example was distilled to obtain in 71% recovery on products of a purified sample (92% pure) of the title product and in 6% recovery on products of a crude (66% purity) sample of the same product.

Quelle