All the components in the reaction mixture were analyzed by
GC–MS on a Varian 1200 Quadrupole MS (EI) and Varian CP-
3800 GC with VF-5 MS column (5% phenyl/95% dimethyl-polysiloxane,
30 m 0.25 mm 0.25 lm), using helium as the carrier
gas at a flow rate of 0.5 mL/s. The oven temperature was maintained
at 120 C for 2 min and then increased to 200 C at 40 C/
min. Injector and detector temperature were 300 C. Components
were identified by NIST 98 MS library. Sample quantification was
done on a GC-FID (Shimadzu 2010) using similar separation conditions
as mentioned above for the GC–MS.