Convenient Access to Bicyclic and Tricyclic Diazenes
نویسندگان
چکیده
منابع مشابه
Convenient access to bicyclic and tricyclic diazenes.
Heating the tosylhydrazone of an omega-alkenyl ketone or aldehyde to reflux in toluene in the presence of K(2)CO(3) delivered the bicyclic diazene. Irradiation of the diazene converted it to the cyclopropane. This appears to be a generally useful method for the construction of substituted cyclopentanes and cyclohexanes.
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A diversity-oriented synthesis involving a cascade sequence, taking linear aminoalkenes to polycyclic scaffolds reminiscent of natural alkaloids, is presented.
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A preparatively accessible route to a series of conformationally-locked bicyclic morpholines has been developed. This flexible approach allows for diversification in order for a small array of lead-like scaffolds to be synthesised from readily available key building blocks.
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The intramolecular dipolar cycloaddition of an azide with an alkyne has provided a useful entry into triazole fused tricyclic heterocycles containing both the triazole ring and the oxazolidin-2-one ring system. The requisite azido-alkynes have been prepared via a two-step sequence from fused ring aziridines. A series of 6-12 membered rings containing both the oxazolidinone and triazole rings ha...
متن کاملConvenient access to readily soluble symmetrical dialkyl-substituted α-oligofurans.
An expedient approach to the synthesis of well soluble symmetrical dialkyl-substituted α-oligofurans containing up to 8 π-conjugated furan heterocycles is reported. An ultimate symmetry and high solubility of these α-oligofurans were guaranteed using the 3,3'-diheptyl-2,2'-bifuran core and its symmetrical elongation through Suzuki-Miyaura or Stille cross-couplings. 3,3'-Diheptyl-2,2'-bifuran wa...
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ژورنال
عنوان ژورنال: The Journal of Organic Chemistry
سال: 2008
ISSN: 0022-3263,1520-6904
DOI: 10.1021/jo8017704