. From-n-butylacrylate, 192 g, 1.5 mmol) and 4-bromobenzenesulfonyl chloride (0.255 g, 1 mmol), product 22 was obtained in 70% (0.198 g) yield as a white solid, pp.37-39

2. Hz, 1.68 (quint, J = 7.6 Hz, 2H), 1.41 (sext., J = 7.6 Hz, 2H), 0.95 (t, J = 7.6 Hz, 3H)

. From-n-butylacrylate, 192 g, 1.5 mmol) and 2-fluoro-4-bromobenzene-1-sulfonyl chloride (0.273 g, 1 mmol), product 23 was obtained in 83% (0.250 g) yield as a white solid, pp.36-38

1. Hz, 86 (s, 3H), 1.68 (quint, J = 7.6 Hz, 2H), 1.41 (sext., J = 7.6 Hz, 2H), 0.96 (t, J = 7.6 Hz, 3H)

. From-n-butylacrylate, 192 g, 1.5 mmol) and 1,4-dibromobenzene-1-sulfonyl chloride (0.334 g, 1 mmol), product 27 was obtained in 91% (0.329 g) yield as a colourless oil

. From-n-butylacrylate, 192 g, 1.5 mmol) and 3,4-dibromobenzene-1-sulfonyl chloride (0.334 g, 1 mmol), product 28 was obtained in 59% (0.214 g) yield as a yellow solid, pp.38-41

. From-n-butylacrylate, 192 g, 1.5 mmol) and 4-iodobenzenesulfonyl chloride (0.303 g, 1 mmol), product 29 was obtained in 82% (0.271 g) yield as a white solid, pp.39-41

2. Hz, 1.68 (quint, J = 7.6 Hz, 2H), 1.41 (sext., J = 7.6 Hz, 2H), 0.95 (t, J = 7.6 Hz, 3H)

. From-n-butylacrylate, 192 g, 1.5 mmol) and 2-iodo-5-nitrobenzene-1-sulfonyl chloride (0.347 g, 1 mmol), product 30 was obtained in 28% (0.105 g) yield as a yellow oil

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