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- W2949162546 abstract "Here in we describe our findings about the behaviour of some N-aryl- and N-heteroaryl-N'-alkylthioureas towards electrophilic reagents. In acid medium, the treatment of thioureas bearing aryl groups with 4-chloropyridine in 2-propanol yielded N-aryl-N-(4-pyridyl)-N'-alk;ylthioureas and N-aryl-N'-alkylureas, whereas the heteroarylthioureas tested under similar reaction conditions afforded N-heteroaryl-N'-alkyl-O-(2-propyl)isoureas. The reaction of N-(5,6,7,8-tetrahydronaphth-1-yl)- and N-(2-benzimidazolyl)-N'-butyl-thiourea with propargyl bromide in acid medium led to the formation of 2-butylimino-3-arylthiazolines, in a regioselective way. However, when this reaction was carried out in basic conditions the regioselectivity failed and a mixture of isomeric thiazolines was obtained. The Z- or E-configuration of the imino group of the synthesized thiazolines was studied by molecular modelling and by selective nuclear Overhauser experiments in nuclear magnetic resonance." @default.
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- W2949162546 date "2001-03-01" @default.
- W2949162546 modified "2023-10-18" @default.
- W2949162546 title "Studies on the reactivity of someN-aryl- andN-heteroaryl-N'-alkylthioureas towards electrophilic reagents. Synthesis of newN-pyridylthioureas and thiazolines maría" @default.
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- W2949162546 doi "https://doi.org/10.1002/jhet.5570380220" @default.
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