In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Chlorination of tetrahydrofuran-2-carboxylic acid esters, published in 1979-02-28, which mentions a compound: 37443-42-8, mainly applied to chlorination photochem furancarboxylate; furancarboxylate tetrahydro chlorination; chlorotetrahydrofurancarboxylate, Synthetic Route of C6H10O3.
Photochem. chlorination of Me tetrahydro-2-furancarboxylate in CCl4 at -15 to -20° gave the chlorofurancarboxylate I and small amounts of the dihydrofuran II (8%) and Me 2-furancarboxylate (2%). Et tetrahydro-2-furancarboxylate was similarly chlorinated. The by-products were formed by dehydrochlorination of intermediate x-chlorination products.
There are many compounds similar to this compound(37443-42-8)Synthetic Route of C6H10O3. if you want to know more, you can check out my other articles. I hope it will help you，maybe you’ll find some useful information.
Reference:
Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics