反应详情

To a solution of 3-chloro-1,2-dihydrocyclobutabenzene-1-carboxylic acid (7.67 mmol, 1.4 g) in DCM (20 ml) was added N-benzyl-2-methylprop-2-en-1-amine (11.50 mmol, 1.854 g), triethylamine (15.33 mmol, 2.131 ml, 1.552 g) and cyclophos (50 wgt % solution in EtOAc) (9.20 mmol, 2.74 ml, 2.93 g). The mixture was stirred at ambient temperature overnight then cyclophos (50 wgt % solution in EtOAc) (0.5 ml) added and the mixture stirred for a further 1 hr. The mixture was diluted with DCM (10 ml), washed with 2 N HCl (20 ml) then 2 N NaOH (20 ml), dried over Na2SO4, filtered and concentrated under reduced pressure to afford N-benzyl-3-chloro-N-(2-methylallyl)-1,2-dihydrocyclobutabenzene-1-carboxamide as a brown oil (1.8 g).

1. stirringthe mixture stirred for a further 1 hr
2. washwashed with 2 N HCl (20 ml)
3. dry with material2 N NaOH (20 ml), dried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure