Synthesis and conformations of [2.n]metacyclophan-1-ene epoxides and their conversion to [n.1]metacyclophanes.
Synthesis and conformations of [2.n]metacyclophan-1-ene epoxides and their conversion to [n.1]metacyclophanes.
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[2.n]间环芳-1-烯环氧化物的合成和构象及其转化为[n.1]间环芬。
DOI:
10.1039/c7ob00400a
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发表时间:
2017
影响因子:
3.2
通讯作者:
Akther T
中科院分区:
文献类型:
--
作者:
Akther T
A series of syn- and anti-[2.n]metacyclophan-1-enes have been prepared in good yields by McMurry cyclizations of 1,n-bis(5-tert-butyl-3-formyl-2-methoxyphenyl)alkanes. Significantly, acid catalyzed rearrangements of [2.n]metacyclophan-1-enes afforded [n.1]metacyclophanes in good yield. The ratios of the products are strongly regulated by the number of methylene bridges present. The percentages of the rearrangement products increase with increasing length of the carbon bridges. Characterization and the conformational studies of these products are described. Single crystal X-ray analysis revealed the adoption of syn- and anti-conformations. DFT calculations were carried out to estimate the energy-minimized structures of the synthesized metacyclophanes.
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DOI:
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发表时间:
1997
期刊:
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DOI:
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1996
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发表时间:
2007
期刊:
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