Abstract
Diacenaphtho[1,2-c:1
′,2
′-e]-1,2-dithiin
2 was obtained from the reaction of acenaphthylene with elemental sulfur at 120 °C. Compound
2 reacts with Pt(COD)
2 to yield the complex Pt(COD)(C
24H
12S
2)
4 by insertion of a Pt(COD) group into the S–S bond of
2. When heated,
4 eliminates a (COD)PtS group to yield diacenaphtho[1,2-b:1
′,2
′-d]thiophene
1.
Diacenaphtho[1,2-c:1
′,2
′-e]-1,2-dithiin
2 was synthesized in 23% yield by the reaction of acenaphthylene with elemental sulfur at 120 °C. This reaction also afforded either diacenaphtho[1,2-b:1
′,2
′-d]thiophene
1 or diacenaphtho[1,2-b:1
′,2
′-e]-dihydro[e]-1,4-dithiin
3 depending on the reaction time. Compound
2 was desulfurized and converted to
1 under UV–vis irradiation in a benzene solution. Reaction of
2 with Pt(COD)
2 yielded the complex Pt(COD)(C
24H
12S
2)
4 (COD=1,5-cyclooctadiene) by insertion of a Pt(COD) group into the S–S bond of
2. When heated,
4 was desulfurized and converted to
1 by elimination of a (COD)PtS grouping. Compounds
1–
4 were characterized crystallographically.
