تفاعل #828713

معادلة التفاعل

Cyclohexene

monochloroborane methyl sulfide

→

dicyclohexylchloroborane

المردود 80.0%

المذيبات

diethyl ether

ظروف التفاعل

المعالجة

1. 1
   أخرىA 250-mL round bottom flask fitted with a rubber septum, a magnetic stirring bar, and a connecting tube
2. 2
   درجة الحرارةwas cooled in an ice bath
3. 3
   أخرىThe solvent was removed under reduced pressure (25° C., 12 Torr)
4. 4
   workup.DISTILLATIONDistillation

الإجراء التجريبي

A 250-mL round bottom flask fitted with a rubber septum, a magnetic stirring bar, and a connecting tube attached to a mercury bubbler was cooled in an ice bath and charged with diethyl ether (90 mL) under inert atmosphere. Cyclohexene (21.2 mL, 210 mmol) was added, followed by the slow addition of monochloroborane-methyl sulfide (11.6 mL, 100 mmol). The mixture was stirred at 0° C. for 2 h. The solvent was removed under reduced pressure (25° C., 12 Torr). Distillation provided pure dicyclohexylchloroborane (δ 76 ppm in hexane), 16.85 g, 80% yield, bp 104°-105° C. (0.5 mm). Synthesis of this product by this process can readily be carried out on a molar scale.

المصدر