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关注：1
2013-05-23 12:21
求翻译：以2,4-二氯-5-硝基-6-取代基嘧啶为原料，首先经过低温取代，在4位上引入R1取代胺基，其次通过高温取代，在2位上引入是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
以2,4-二氯-5-硝基-6-取代基嘧啶为原料，首先经过低温取代，在4位上引入R1取代胺基，其次通过高温取代，在2位上引入
问题补充： |
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2013-05-23 12:21:38
2,4 - dichloro-5-nitro - -6-- substituted pyrimidine as raw material, the first through the low-temperature replaced by the introduction of the four amino replace R1, followed by high temperature replaced by the introduction of the two
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2013-05-23 12:23:18
2 to 2, and 4 -chloro-5 -nitro-6 -methoxy pyrimidine to replace raw materials, first go through a low temperature, replace the 4 -bit, 1 replacing R introduced amine-based and, second, through high temperature, replace the 2 -bit introduce
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2013-05-23 12:24:58
Take 2,4- two chlorine - 5- nitryl - 6- substituting group pyrimidine as raw material, first passes through the low temperature substitution, introduces the R1 substitution amidogen on 4, next through the high temperature substitution, introduces on 2
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2013-05-23 12:26:38
2,4-dichloride -5-Nitro -6-substituent pyrimidines as raw material, passed through a low-temperature replaced R1 should be introduced on the 4-bit substituted amino, followed by high temperature replaced, on a 2-bit introduction
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2013-05-23 12:28:18
By 2, 4 - two chlorine - 5- nitre base - 6- replace pyrimidine of base it is raw materials, through replacing at low temperature at first, introduce R1 at 4 and replace amine base, secondly is replaced by high temperature, introduce at 2
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