hydrogenchloride in methanol 1.) 5 min; 2.) room temperature, 5 h;

1: tetrahydrofuran 2: HNO2 View Scheme

HNO2

2: 65 percent / rifamycin S / methanol / 16 h / Ambient temperature; further oxidising agents View Scheme

in methanol 24 h; Ambient temperaturepH=4.6;

in methanol 24 h; Ambient temperaturepH=4.6;

1: 2.4 g / methanol / 72 h / Ambient temperature; pH= 4.6 2: 0.7 g / LAH / tetrahydrofuran / 0.17 h / Ambient temperature; further reducing agent View Scheme

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '8594215', constants.ctx, '0')">potassium hexacyanoferrate(III)</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '103233', constants.ctx, '0')">pyridine</a> <br /> <br /> &nbsp;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '11343687', constants.ctx, '0')">(NH₄)₂S₂O₈</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098229', constants.ctx, '0')">methanol</a> <br />T=70&deg;C;&nbsp;0.166667&nbsp;h;&nbsp;&nbsp;SolventReagent/catalyst;&nbsp;<br /> &nbsp;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '14152173', constants.ctx, '0')">aq. phosphate buffer</a>;&nbsp;<a href="#" onclick="return RXDsubstances(event, this, '506008', constants.ctx, '0')">dimethyl sulfoxide</a> <br />T=60&deg;C;&nbsp;pH=7.5;&nbsp;1&nbsp;h;&nbsp;&nbsp;pH-valueTemperature;&nbsp;<br /> &nbsp;