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Table 2 Yield (%)/YE of solvent free G and other solvent free Lit. techniques

From: Multicomponent synthesis of 4-arylidene-2-phenyl-5(4H)-oxazolones (azlactones) using a mechanochemical approach

No. Yield (%/G) (YE/G) Yield (%) Lit. (YE)a
2a 90 22 97 [39] 19.4
2b 93 18.6 90 [38] 6.1
2c 96 9.6 91 [38] 2.0
2d 91 7.6 95 [42] 19
2e 96 9.6 85 [38] 1.4
2f 88 7.3 92 [42] 2.0
2 g 87 6.3 91 [42] 2.0
2 h 87 9.3 94 [39] 31.3
2i 79 13.2 91 [39] 30.3
  1. G Grinding, YE yield economy
  2. a YE calculated yield economy on the bases of lit. Y (%)