Chemistry is traditionally divided into organic and inorganic chemistry. category: Tetrahydrofurans, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent，Which mentioned a new discovery about 22530-98-9
Use of HSnBu3 for the reductive cyclization of suitable alpha-bromo allylic esters affords 2,3-disubstituted butyrolactones.
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Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem