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- Distillation time was about 5h. The process was greatly expedited through use of a steam trap that “dries”the steam prior to addition to the flask; this prevents the flask from fillingwith water and removes particulates from the steam line
- The compounds were analyzed byGC using a DB-5 30m column; 50°C for 5 min, then 10°C per minute to250°C. Retention times are 8.5 min for thiophene 2, 11.02 min for dihydrothiophene6, 9.5 min for chloride 7, and 12.2 min for dichlorinated thiophene 8
- Abraham , R. , Chadwick , D. and Sancassan , F. 1982 . Tetrahedron , 30 ( 22 ) : 3245