Process for preparing a biphenyl-2-ylcarbamic acid

摘要

The invention provides a process of preparing an intermediate useful in the synthesis of biphenyl-2-ylcarbamic acid l-(2-{[4-(4-carbamoylpiperidin-l-ylmethyl) benzoyl]methylamino}ethyl)piperidin-4-yl ester, and a process of preparing a crystalline freebase of the ester.