The name of the parent six-membered sulfur-containing heterocycle is thiane. It is numbered beginning at sulfur. Multiple incorporation of sulfur in the ring is indicated by the prefixes di-, tri-, and so on.
(a) How many methyl-substituted thianes are there? Which ones are chiral?
(b) Write structural formulas for 1, 4-dithiane and 1, 3, 5-trithiane.
(c) Which dithiane isomer is a disulfide?
(d) Draw the two most stable conformations of the sulfoxide derived from thiane.