1973
DOI: 10.1002/oms.1210070111
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Fragmentation of reduced dibenzo[b,f][1,4]‐diazocines, ‐oxazocines and ‐thiazocines on electron‐impact

Abstract: An investigation of the mass spectral behaviour of the title compounds is reported. Two processes have been studied by deuterium labelling. One, which occurs with all three ring systems, results in the loss of a C,H, radical, whilst the other, which occurs only in the dibenzothiazocine, leads to the loss of a C6H6N radical.

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Cited by 3 publications
(2 citation statements)
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“…, 65-5(15), 65(5), 64(16), 63(18), 52.5(14), 52(10), 51*5(10), 51(18), 50(14), 39(10).1 ,3-Dimethyl-1 H-2,1,3-benzothiadiazin-4, (3H)-one 2,2-dioxide (VII) 227(12), 226(100), 161(16), 147(4), 134(8), 133(41), 132(9), 106(8), 105(88), 104(49), 92(8), 90(4), 78(20), 77(16), 76(4), 64(8), 63(12), 51(16), 50(8), 39(12).3-Trideuteroinethyl-1 H-2,1,3-benzothiadiazin-4, (3H)-one 2,2-dioxide (VIII) 216(10), 215(100), 150(0.7), 149(3), 137(4), 136(35), 135(2), 134(5), 133(2), 122…”
mentioning
confidence: 99%
“…, 65-5(15), 65(5), 64(16), 63(18), 52.5(14), 52(10), 51*5(10), 51(18), 50(14), 39(10).1 ,3-Dimethyl-1 H-2,1,3-benzothiadiazin-4, (3H)-one 2,2-dioxide (VII) 227(12), 226(100), 161(16), 147(4), 134(8), 133(41), 132(9), 106(8), 105(88), 104(49), 92(8), 90(4), 78(20), 77(16), 76(4), 64(8), 63(12), 51(16), 50(8), 39(12).3-Trideuteroinethyl-1 H-2,1,3-benzothiadiazin-4, (3H)-one 2,2-dioxide (VIII) 216(10), 215(100), 150(0.7), 149(3), 137(4), 136(35), 135(2), 134(5), 133(2), 122…”
mentioning
confidence: 99%
“…Le benzothiazole [ l ] est un produit commercial ( Aldrich 1 . Le benzothiazole-2d [ Z ] est obtenu par la mdthode de Kemp(12)( puret6 isotopique : 98 % ) , tandis que le benzothiazole-6-d [ 3 ] est isolk par dksamination nitreuse du 6-amino-benz~thiazole(~~) suivant la m6thode de Henry et Finnegan (14) . Les mercaptobenzonitriles [&-o,rn,p] sont prepares par pyrolyse d'0-aryldim6thylthiocarbamates suivie d'hydrolyse basique selon Newman et Karnes (") ; 1'6change de l'hydrogsne fix6 au soufre est realis6 directement dans la source du spectrometre de masse par introduction d'eau lourde.…”
Section: Partie Experimentaleunclassified