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(±)-3-(6-chloro-4-hydroxy-2,3-dihydro-1H-inden-5-yl)-2-hydroxypropyl 4-methylbenzenesulfonate

triphenylphosphine

diisopropylazodicarboxylate

→

(±)-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methyl 4-methylbenzenesulfonate

수율 91.0%

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실험 절차

Treatment of (±)-3-(6-chloro-4-hydroxy-2,3-dihydro-1H-inden-5-yl)-2-hydroxypropyl 4-methylbenzenesulfonate (4.7 g, 0.012 mol) with triphenylphosphine (4.64 g, 0.018 mol) and diisopropylazodicarboxylate (3.57 g, 0.018 mol) generally according to the procedure described for Intermediate 5 gave 4.09 g (91%) of (±)-(4-chloro-3,6,7,8-tetrahydro-2H-indeno[4,5-b]furan-2-yl)methyl 4-methylbenzenesulfonate as a white solid. mp 95-97° C.; Anal. calcd. for C19H19ClO4S: C, 60.23; H, 5.05. Found: C, 60.12; H, 4.97.

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