62334-09-2Relevant articles and documents
Synthesis of 3,4-dihydroisoquinolin-1-ones from N-Boc-(β-Arylethyl) carbamates via isocyanate intermediates
In, Jinkyung,Hwang, Soonho,Kim, Changhun,Seo, Jae Hong,Kim, Sanghee
, p. 965 - 971 (2013/03/14)
Mild reaction conditions for the regioselective synthesis of isoquinolin-1-ones and related fused-ring heterocycles from N-Boc-protected (β-arylethyl)carbamates are described. The reactions involved the use of Tf2O and 2-chloropyridine and isocyanates are likely to be key intermediates. The method was extended to substrates bearing less nucleophilic aryl moieties by using Lewis acid additives, such as BF3· Et2O, to enhance the Friedel-Crafts-type cyclization of the isocyanate intermediates. This method allowed the synthesis of various substituted isoquinolin-1-ones, β-carbolines, thiophene-fused ring systems and tetrahydrobenzoazepin-1-ones in good yields and with high regioselectivities. Copyright
Efficient synthesis of tetrahydro-b-carbolin-1-one and dihydroisoquinolin- 1-one derivatives as versatile Intermediates
Judd, Katie E.,Mahon, Mary F.,Caggiano, Lorenzo
experimental part, p. 2809 - 2817 (2010/01/21)
An efficient one-pot procedure is described in which an isocyanate intermediate, generated from the corresponding carboxylic acid by a modified Curtius rearrangement, is captured by a tethered aromatic ring in the presence of BF3?OEt2 to generate various
A cyclization of β-arylethylisocyanates to 3,4-dihydroisocarbostyrils
Umezawa,Hoshino,Sawaki,Mori
, p. 1003 - 1005 (2007/10/02)
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