3-(9′,10′-Dihydro-9′,10′-ethanoanthracen-11′-ylidene)prop-2-enoyl
chloride and its [12′,12′- 2 H2]
and [1- 13 C] isotopomers have been prepared
and pyrolysed. Argon matrix infrared spectroscopy showed
ν2 bands at 2207 . 7, 2207 . 0, and 2168
. 5 cm−1 respectively for the three
pentatetraenone isotopomers. The pyrolysate of the 12′-methyl
substituted precursor showed a band at 2205 cm−1
which was tentatively assigned to methylpentatetraenone. The 12′-ethenyl
substituted precursor gave a pyrolysate showing ketene bands but also yielded
9,10-dihydro-9,10[1′,2′]-benzenoanthracene.
3-(9′,10′-二氢-9′,10′-乙桥蒽-11′-亚基)丙-2-烯酰
氯化物及其[12′,12′- 2 H2]
及其[12′,12′- 2 H2]和[1- 13 C]同位素的制备和热解。
并进行了热解。氩基红外光谱显示
ν2 波段在 2207 .7, 2207 .0 和 2168
.5 cm-1
2207 . 0 和 2168 .12′-methyl
取代的前体的热裂解产物在 2205 cm-1 处显示出一条带。
初步归属于甲基五四烯酮。12′-ethenyl
取代的前体产生的热解产物显示出烯酮带,但也产生了
9,10-dihydro-9,10[1′,2′]-benzenoanthracene.