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Preparation of N-substituted imidazolidinones and N-substituted 2- thionimidazolidinones
Preparation of N-substituted imidazolidinones and N-substituted 2- thionimidazolidinones
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机译:N-取代的咪唑啉酮和N-取代的2-硫代咪唑啉酮的制备
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摘要
The invention is a process for the preparation of N- substituted imidazolidinones and N-substituted 2-thionimidazolidinones which comprises contacting an oxazolidinone with a compound containing a nitrogen directly bonded to a carbonyl or a thiocarbonyl group in the presence of a Lewis acid catalyst or the hydrate of a Lewis acid catalyst under conditions such that an N-substituted imidazolidinone or N- substituted 2-thionimidazolidinone is prepared. The compound containing a nitrogen directly bonded to a carbonyl or a thiocarbonyl group is an isocyanate or isothiocyanate or a compound wherein the nitrogen is reactive and the carbonyl or thiocarbonyl group is further bonded to a substituent by a bond which is clevable under the reaction conditions. The Lewis acid catalyst corresponds to the formula ##EQU1## wherein M is a group IB-VIIIB, IIIA or IVA element with the proviso that M is not C or Si;PPX is a halogen; andPPn is 2, 3 or 4.
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机译:本发明是一种制备N-取代的咪唑烷酮和N-取代的2-硫代咪唑啉酮的方法,该方法包括在路易斯酸催化剂或路易斯酸存在下,使恶唑烷酮与含氮的直接与羰基或硫代羰基键合的化合物接触。在使得N-取代的咪唑啉酮或N-取代的2-硫代氨基咪唑啉酮的条件下制备路易斯酸催化剂的水合物。含直接与羰基或硫代羰基键合的氮的化合物是异氰酸酯或异硫氰酸酯或其中氮是反应性且羰基或硫代羰基通过在反应条件下可断裂的键进一步与取代基键合的化合物。路易斯酸催化剂对应于式## EQU1 ##,其中M是IB-VIIIB,IIIA或IVA族元素,条件是M不是C或Si; P