“…2,3 (BDOT); 12,13 (2) sulfur analogs, 3,4-methylenedithiathiophene (MDTT), 3,4-ethylenedithiathiophene (EDTT), EDTT-R (R ¼ Br, CH 2 OH etc. ), 3,4-propylenedithiathiophene (PDTT), and thieno [3,4-b]-1,4-oxathiane (EOTT); [14][15][16][17][18] (3) selenium analogs, 3,4-ethylenedioxyselenophene (EDOS), 3,4-propylenedioxyselenophene (PDOS), PEDOS-R 2 (R 2 ¼ C n H 2nþ1 , n ¼ 4, 6, 10), 3,4ethylenedithioselenophene (EDTS), seleno [3,4-b]-1,4-oxathiane (EOTS), and 3,4-ethylenediselenathiophene (EDST); [19][20][21][22][23][24][25] (4) nitrous analogs, 3,4-methylenedioxypyrrole (MDOPy), 3,4-ethylenedioxypyrrole (EDOPy), 3,4-propylenedioxypyrrole (PDOPy), 3,4-butylenedioxypyrrole (BDOPy), 3,4-methylenedithiopyrrole (MDTPy), and 3,4-ethylenedithiopyrrole (EDTPy); [26][27][28][29] (5) phosphorous analog, 3,4-ethylenedithiaphosphole (EDPP); 30 (6) oxygenic analogs, 3,4-ethylendithiafurane (EDTF), 3,4-ethylenedioxyfuran (EDOF), and 3,4-dihydro-2H-thieno [3,4-b]pyran (EDTP); [31][32][33] (7) telluric analog, 3,4-ethylenedioxytellurophene (EDOTe) as a predicted structure based on 3,4dimethoxytellurophene (DMOTe). 34 Structures of the above are summarized in Scheme 2.…”