90 m 2h 7 45 m 4h 7 3 m 2h 6 5 br 2h 6 25 d 1h 3 4 m 7h 2 0 m 4h the procedure given in example 1 was followed using 2 chlorostyrene oxide and 4 4 methoxybenzoyl piperidine as reactants instead of styrene oxide and 4 4 fluorobenzoyl piperidine to give carbamic acid 1 2 chloro phenyl 2 4 4 methoxy benzoyl piperidin 1 yl ethyl ester hydrochloride 1h nmr dmso d6 200 mhz u03b410 8 br 1h 8 0 m 2h 7 4 m 4h 7 0 m 2h 6 85 br 2h 6 2 d 1h 3 8 s 3h 3 4 m 7h 2 0 m 4h the procedure given in example 1 was followed using 2 chlorostyrene oxide and 4 4 tert butylbenzoyl piperidine as reactants instead of styrene oxide and 4 4 fluorobenzoyl piperidine to give carbamic acid 2 4 4 tert butyl benzoyl piperidin 1 yl 1 2 chloro phenyl ethyl ester 1h nmr cdcl3 200 mhz u03b47 9 d 2h 7 45 m 3h 7 3 m 3h 6 25 dd 1h 5 0 s 2h 3 2 m 2h 2 95 dd 1h 2 8 dd 1h 2 65 dd 1h 2 3 m 2h 1 8 m 4h 1 35 s 9h the procedure given in example 1 was followed using 2 chlorostyrene oxide and 4 4 chlorobenzoyl piperidine as reactants instead of styrene oxide and 4 4 fluorobenzoyl piperidine to give carbamic acid 2 4 4 chloro benzoyl piperidin 1 yl 1 2 chloro phenyl ethyl ester hydrochloride 1h nmr cd3od 200 mhz u03b48 0 d 2h 7 45 m 6h 6 4 d 1h 5 9 br 2h 3 6 m 7h.