反应详情

Prepared analogous to Example 1(b) from monosodium 2-carboxy-6-chloro-benzo-[b]-thiophene-3-sulfonate and phosphorus (V)-chloride in the presence of phosphorus oxide trichloride with a yield of 72% of theory. The product, which crystallized upon cooling, was used in the next step without further purification.

1. customThe product, which crystallized
2. temperatureupon cooling
3. customwas used in the next step without further purification