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. 2013 Jul 8;18(7):8063–8082. doi: 10.3390/molecules18078063

Figure 1.

Figure 1

Compound structures: methyl acetate (1); S-methyl thioacetate (2); O-methyl thioacetate (O-methyl ethanethioate, 3); dithioacetic acid methyl ester (4); 2-methoxyfuran (5); 2-methylthiofuran (6); 2-methoxythiophene (7); 2-methylthiothiophene (8). The indicated conformation of the esters 1–4 is the most stable cis form. For 2-methoxyfuran (5) and 2-methoxythiophene (7) the most stable form is trans, and for 2-methylthiofuran (6) and 2-methylthiothiophene (8) the most stable form is gauche.