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author = "LONGHI, GIOVANNA"
1
Found 3 documents, displaying page 1 of 1
Chiroptical properties of some monoazapentahelicenes
Description :
Three closely related previously synthesized monoaza[5]helicenes have been resolved into their enantiomers via enantioselective HPLC using a cellulose-derivative Chiralcel OD column. Circular dichroism (CD) spectra of the enantiomerically enriched samples have been recorded and assigned. The spectra...
Repository :
Aisberg - Archivio Istituzionale Università di Bergamo
Language(s) :
English
Experimental and calculated circular dichroism spectra of monoaza[5]helicenes
Author(s) :
ABBATE, SERGIO
,
BAZZINI, CRISTINA
,
CARONNA, TULLIO
,
FONTANA, FRANCESCA
,
CANGEMI, FRANCESCO
,
LEBON, FRANCE
,
LONGHI, GIOVANNA
Description :
Circular dichroism (CD) spectra have been measured in the range of 400–200 nm on CH3OH solutions of both enantiomers for the
almost complete series of monoaza[5]helicenes, namely the molecules where the hetero N atom occupies positions 1, 3, 4, 5, 6, and 7,
respectively (the 2 isomer is missing due ...
Repository :
Aisberg - Archivio Istituzionale Università di Bergamo
Language(s) :
English
2,13-diaza[5]helicene: synthesis, theoretical calculations and spectroscopic properties
Author(s) :
CARONNA, TULLIO
,
FONTANA, FRANCESCA
,
LONGHI, GIOVANNA
,
MELE, ANDREA
,
NATALI SORA, ISABELLA
,
PANZERI, WALTER
,
VIGANÒ, LUCA
Description :
An easy approach to the synthesis of azahelicenes is based on the photochemical cyclisation of symmetrically or asymmetrically 1,2-aryl-substituted double bonds. In the synthesis of 2,13-diaza[5]helicene, irradiation of 9-(2-pyrid-4-yl-vinyl)-benzo[h]isoquinoline yielded 2,9-diaza-dibenzo[a.h]anthra...
Repository :
Aisberg - Archivio Istituzionale Università di Bergamo
Language(s) :
English
1
Found 3 documents, displaying page 1 of 1