- The Synthesis and Structure of 3,4-Di-t-butylbenzoic Acid
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3,4-Di-t-butylbenzoic acid (1) was synthesized by a seven-step sequence from 4-t-butylbenzoic acid, and its structure was determined by X-ray diffraction and refined to a residual of 0.065 for 1403 independent observed reflections.The crystals are triclinic, P1, a 6.080(1), b 8.777(1), c 13.912(3) Angstroem, α 80.76(2), β 80.84(2), γ 75.62(2)deg.It is the only example of a simple ortho-di-t-butylbenzene whose structure has been determined.The benzene ring experiences some out-of-plane distortion but, in general, strain is relieved by in-plane bond stretching and angular distortions.
- Hambley, Trevor W.,Sternhell, Sever,Tansey, Charles W.
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p. 807 - 814
(2007/10/02)
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- 4,5- AND 3,5-BIS(ETHOXYCARBONYL)-2,7-DI-t-BUTYLTHIEPINES. SYNTHESIS AND THERMAL STABILITIES
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4,5-Bis(ethoxycarbonyl)-2,7-di-t-butylthiepine and 3,5-bis-(ethoxycarbonyl)-2,7-di-t-butylthiepine have been synthesized.Thermal stabilities of these thiepines have been examined and discussed in connection with those of the monocyclic thiepines reported so far.
- Yamamoto, Kagetoshi,Matsukawa, Atsuhito,Murata, Ichiro
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p. 1119 - 1122
(2007/10/02)
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