反应详情

To an aqueous solution of desacetyl glutaryl 7ACA (4 ml, 0.20 mmoles) chilled in an ice bath is added 0.4 ml acetic anhydride (4.2 mmoles) dropwise and 20% sodium hydroxide (9.75 mmoles) is pumped in to maintain the reaction pH at 7.0±1. After all of the acetic anhydride is added and the pH stabilizes, by HPLC there is now 0.148 moles of glutaryl 7ACA (yield is 74%). There is 4.5% of desacetyl glutaryl 7ACA remaining along with 10% of a compound tentatively identified as the cyclic glutarimide 7ACA derivative.

1. temperatureto maintain the reaction pH at 7.0±1