Double Addition
<i>vs</i>
. Ring Closure: Systematic Reactivity Study of CO(NCO)
<sub>2</sub>
and CO(NCS)
<sub>2</sub>
towards Hydrogen Halides
作者:Jonathan Pfeiffer、Hennes Günther、Lena Völlinger、Demian Botros、Benjamin Scheibe、Martin Möbs、Florian Kraus、Florian Weigend、Frank Tambornino
DOI:10.1002/chem.202203983
日期:——
Carbonyl diisocyanate, CO(NCO)2, and carbonyl diisothiocyanate, CO(NCS)2, react differently with hydrogen halides HF, HCl, HBr and HI: Whereas carbonyl diisocyanate adds two equivalents thus forming carbonyl bis(carbamoylhalides), carbonyl diisothiocyanate only adds one equivalent and undergoes intramolecular ring closure, resulting in the formation of substituted thiadiazines.
羰基二异氰酸酯CO(NCO) 2和羰基二异硫氰酸酯 CO(NCS) 2与卤化氢 HF、HCl、HBr 和 HI 的反应不同:而羰基二异氰酸酯加成两个当量从而形成羰基双(氨基甲酰卤),羰基二异硫氰酸酯仅添加一个当量并经历分子内环闭合,导致形成取代的噻二嗪。