Results We first reexamined the reaction of cyclopropane with palladium chloride in benzene under 100 atm of carbon monoxide at 90" C. We found that the ratio of chlorobutyrates (73%) to n-propylbenzene (27% 1 was similar to that reported earlier. 3 While the formation and ratio of these products was not too dependent upon carbon monoxide pressure and temperature, we did find that the ratio of products was very ...