Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5269059 | Tetrahedron Letters | 2014 | 4 Pages |
Abstract
Methylene bridged polycyclic diazocines 2a and 2b were obtained in reactions of 1,3-indanedione, or benzo[b]thiophen-3(2H)one-1,1-dioxide, or 2,2â²-methylene derivatives 3a,b with paraformaldehyde and ammonia or hexamethylenetetramine in acidic medium. A structural revision of methylene bridged benzothieno-diazocine 2b based on results of X-ray diffraction analysis is presented. Internal rearrangement of methylene bridged polycyclic diazocines into spiroheterocycles 4a,b is also described.
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Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Brigita Cekavicus, Brigita Vigante, Martins Rucins, Aiva Plotniece, Karlis Pajuste, Marina Petrova, Sergey Belyakov, Gunars Duburs, Arkadij Sobolev,