Table 1 Isolated yields of amide 2, sulfonamide 3 and urea 4 derivatives

a

Cyclopentyl (Sudrik et al. 2002)

a

Phenyl (José et al. 2011)

a

3-Cyano phenyl

b

t-Butyl (Martínez-Asencio et al. 2011a)

b

p-Tolyl (Gao et al. 2005)

b

1-Naphthyl

c

4-Fluro-phenyl (Mamat et al. 2011)

c

4-Fluro-phenyl (Ramunno et al. 2012)

c

4-Fluro phenyl

d

Cyclopropyl (Yang and Shi 2005)

d

4-Chlorophenyl (Ramunno et al. 2012)

d

2-Trifluromethyl-phenyl

e

Cyclohexyl (Saito et al. 2008)

e

4-Trifluromethoxy phenyl (Shi et al. 2009)

e

2-Methoxy-phenyl

f

n-Butyl (Dermer and King 1943)

f

4-Methoxy phenyl (Martínez-Asencio et al. 2011b)

f

Phenyl

g

2-Furyl (Gernigon et al. 2012)

g

2,4-Dichloro phenyl

g

4-Cyano phenyl

h

4-Nitro phenyl (Bahrami et al. 2010)

h

3,4-Dichloro phenyl

h

4-Triflurometh -oxy phenyl

i

4-Methoxy-phenyl (Kokare et al. 2007)

i

2,5-Dimethoxyphenyl

j

2,4-Dichloro-phenyl (Richard Cremlyna et al. 1989)

k

Ethyl (Lee et al. 1999)

l

Phenyl (Nowrouzi and Jonaghani 2012)