反应 #452458
ord-569ed572bb68436eaab4e845b5eb49b9
反应方程式
反应物
试剂
无
反应条件
详细条件
See reaction.notes.procedure_details.
后处理
- 1其他the solution was evaporated
- 2其他to give a paste
- 3workup.STIRRINGstirring
- 4其他to afford
- 5workup.WAITafter standing 20 hr at 0° C.
- 6过滤filtration
- 7其他drying in vacuo
实验过程
A solution of 7.52 g (26.6 mmol) of the product from step C in 50 ml of CH2Cl2 and 80 ml of anhydrous pyridine was treated with 11.12 g of (methoxycarbonylsulfamoyl)-triethylammonium hydroxide inner salt (Burgess reagent) in 1-g portions over 5 min. After stirring for 1.5 hr, TLC (90-10-1, CHCl3 -CH3OH-H2O) showed complete conversion to product, and the solution was evaporated to give a paste, to which H2O was added, up to 400 ml, with trituration and stirring to afford, after standing 20 hr at 0° C., filtration and drying in vacuo, the title compound as a white solid.