157735-41-6Relevant articles and documents
Synthesis and crystallography of 8-halonaphthalene-1-carbonitriles and naphthalene-1,8-dicarbonitrile
Noland, Wayland E.,Narina, Venkata Srinivasarao,Britton, Doyle
, p. 694 - 697 (2011)
A convenient and high-yielding three-step synthesis of 8-halonaphthalene-1- carbonitriles has been achieved by ring opening of 1H-naphtho[1,8-de][1,2,3] triazine with the corresponding halides as the key step. Naphthalene-1,8- dicarbonitrile also has been synthesised from 8-bromonaphthalene-1-carbonitrile via palladium-catalysed cyanation of the aryl bromide. The crystal structures of 8-chloronaphthalene-1-carbonitrile, the A polymorph of the bromo analogue, and naphthalene-1,8-dicarbonitrile are isomorphous with orthorhombic symmetry. The B polymorph of the bromo compound and the iodo analogue are also isomorphous, but with monoclinic symmetry. In all of the halo carbonitriles, the molecules are disordered with respect to the location of the halogen atoms and the nitrile groups. There are no intermolecular X...NC interactions in any of the solids.
Enantioselective synthesis of (+)-estrone exploiting a hydrogen bond-promoted Diels?Alder reaction
Weimar, Marko,Duerner, Gerd,Bats, Jan W.,Goebel, Michael W.
supporting information; experimental part, p. 2718 - 2721 (2010/07/17)
Starting from Danes diene and methylcyclopentenedione, (+)-estrone is synthesized along the Quinkert?Dane route in 24% total yield. The key step is an enantioselective Diels?Alder reaction promoted by an amidinium catalyst as efficiently as by a traditional Ti-TADDOLate Lewis acid.
Axial-chirale Amidinium-Ionen mit Biarylgeruest: ein neuer Strukturtyp fuer die Wirt-Gast-Chemie
Lehr, Stefan,Schuetz, Karin,Bauch, Markus,Goebel, Michael W.
, p. 1041 - 1043 (2007/10/02)
-
