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Synthesis of 2-[(7-chloroquinolin-4-yl)sulfinyl]ethyl or propyl benzoate 42–62 and 2-[(N-oxide 7-chloroquinolin-4-yl)sulfonyl]ethyl or propyl benzoate derivatives 63–82. Reagents and conditions. iii: m-CPBA (1.2 mmol), CH2Cl2, 10 min, rt. iv: m-CPBA (2.5 mmol), CH2Cl2, 8–15 h, rt.
