The Diels-Alder (DA) reaction of diacenaphtheno[1,2-b;1',2'-d]thiophene (1a) with benzyne affords 1:1 and 1:2 adducts, 7 and 8, in 47 and 11% yields. An X-ray crystallographic analysis reveals that 8 possesses a dibenzobarrelene structure involvin...
Strained phenylacetylene macrocycles, cyclic [3]- and [4]metaphenylacetylenes ([n]CMPAs) and methoxy derivatives, and cyclic [5]- to [9]paraphenylacetylenes ([n]CPPAs) were prepared using a strategy based on the McMurry coupling reaction. The phys...
JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN 65(9) 888-896 2007年9月
The pi-pi interaction between curved conjugated systems is important for the formation and properties of new carbon materials such as carbon nanotubes, bucky onions and fullerene peapods. However, the nature has been little understood so far. Rece...
H Kurata   Y Takehara   K Matsumoto   T Kawase   M Oda   
CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月
The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylid...
H Kurata   Y Takehara   K Matsumoto   T Kawase   M Oda   
CHEMISTRY LETTERS 34(12) 1660-1661 2005年12月
The extended-qui none derivative of cyclopent[fg]acenaphthylene-1,2-dione (pyracyloquinone) is first synthesized and characterized. An X-ray analysis exhibits the non-planar structure involving bent of two 3,5-di-tert-butyl-4-oxo-cyclohexadienylid...