反应详情

A solution of pentyl-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)-amine (33) (1.0 g, 3.6 mmole) in 20 mL of THF was treated with 380 mg of triphosgene (0.35 eq.). The reaction mixture was stirred at reflux for three hours, poured onto 30 mL ice-water and extracted with three portions of 30 mL of ethyl acetate. The combined organic extracts were dried over MgSO4, filtered and concentrated in vacuo to give 1.26 g of pentyl-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydro-naphthalen-2-yl)-carbamoyl chloride (35) as a white solid, which was used without purification.

1. temperatureat reflux for three hours
2. extractionextracted with three portions of 30 mL of ethyl acetate
3. dry with materialThe combined organic extracts were dried over MgSO4
4. filtrationfiltered
5. concentrationconcentrated in vacuo