beciparcil synthesis
- Product Name:beciparcil
- CAS Number:130782-54-6
- Molecular formula:C12H13NO3S2
- Molecular Weight:283.371
130782-78-4
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130782-54-6
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Yield:130782-54-6 89.7%
Reaction Conditions:
with sodium methylate in methanol;
Steps:
V Preparation of 4-cyanophenyl 1,5-dithio-β-D-xylopyranoside (Example 1)
PREPARATION V Preparation of 4-cyanophenyl 1,5-dithio-β-D-xylopyranoside (Example 1) Under a nitrogen atmosphere, 8.5 g (21.10-3 mol) of 4-cyanophenyl 2,3,4-tri-O-acetyl-1,5-dithio-β-D-xylopyranoside (Example 1a) are suspended in 100 ml of methanol, and 2 ml of sodium methylate (8% w/v of Na in methanol) are then added. The reaction medium is stirred at room temperature until the starting material has completely dissolved (2 hours) and is then neutralized by the addition of Amberlite IR 120 H+ resin. The methanol is evaporated off under reduced pressure; the crude product obtained is recrystallized from an ethanol/water mixture (65/25 v/v) to give 5.3 g (yield: 89.7%) of the expected product. M.p.=175° C. [α]D20° C. =+35.8° (c=0.5; CH3 OH)
References:
US5101048,1992,A
20031-21-4
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214272-22-7
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