183181-22-8Relevant academic research and scientific papers
A versatile route to 3-benzoheteroepines containing group 15 and 16 heavier elements involving several novel ring systems, and their thermal stabilities.
Yasuike, Shuji,Kiharada, Tsutomu,Tsuchiya, Takashi,Kurita, Jyoji
, p. 1283 - 1288 (2003)
The C-unsubstituted 3-benzoheteroepines (2a-g) containing group 15 (P, As, Sb, and Bi) and group 16 (S, Se, and Te) heavier elements were prepared by the reaction of the corresponding metal reagents with (Z,Z)-o-bis(beta-lithiovinyl)benzene (5) which was derived in two steps from a common o-phthalaldehyde (3). The heteroepines (2) thus obtained were thermally labile towards heteroatom extrusion, and their half-lives on heating estimated from (1)H-NMR spectral analysis showed that the 3-benzoheteroepines (2) were far less stable than the corresponding 1-benzoheteroepines (1). The 2,4-bis(trimethylsilyl)-3-benzoheteroepines (17) containing Sb, Bi, and Te were also prepared from o-diiodobenzene (9) in 6 steps and were found to be more stable than the corresponding C-unsubstituted heteroepines (2).
Synthesis and thermal stability of 3-substituted 3-benzostibepines
Yasuike, Shuji,Ikoma, Masaaki,Kakusawa, Naoki,Tsuchiya, Takashi,Kurita, Jyoji
, p. 659 - 667 (2009)
Fully unsaturated 3-benzostibepines having various aryl groups on antimony have been prepared by a ring closure reaction of an appropriate antimony dihalide (ArSbBr2) with (Z,Z)-1,2-bis(2-lithiovinyl)benzene generated by treatment of (Z,Z)-1,2-
A versatile synthesis of the group 15 and 16 3-benzoheteroepines involving the first isolated examples of several C-unsubstituted 3-benzoheteroepines
Yasuike, Shuji,Kiharada, Tsutomu,Kurita, Jyoji,Tsuchiya, Takashi
, p. 2183 - 2184 (2007/10/03)
Group 15 (P, As, Sb and Bi) and group 16 (S, Se and Te) 3-benzoheteroepines 2, involving the first isolated examples of several C-unsubstituted fully unsaturated 3-benzoheteroepines, are prepared in two steps from (Z,Z)-o-bis(β-bromovinyl)benzene 4 and their thermal stabilities examined.
