光气

The application of large amounts of phosgene in chemical industry, however, caused seriously environmental and ecological problems.

目前全球光气产量超过700万吨，剧毒光气的大量使用造成严重的生态危机，而光气的主要用途（＞85％）是用于生产异氰酸酯。

Expressions of PPAR-γ mRNA and its protein in lung were decreased significantly after phosgene exposure.

光气染毒后大鼠肺组织PPAR-γ基因及蛋白表达显著降低，这可能与光气诱导肺组织发生的炎症反应有关。

A series of convenient and efficient reactions have been developed. Especially, instead of using toxic phosgene, the triphosgene was employed in the synthetic process of some receptors, which provides a convenient. safe and efficient method for the preparation of chiral unsymmetrical urea.

深入研究了它们的合成方法，实现了多种简便有效的选择性合成，特别是以三光气代替剧毒的光气，实现了一条简便、安全、有效的制备手性不对称脲的方法。

Phosgene has been used in many organic syntheses, notably of isocyanates; but its commercial use has been largely discontinued because of its toxicity.

光气被广泛应用于有机合成，尤其是异氰酸盐的合成，但由于光气毒性巨大，限制了它在商业上的应用。

BACKGROUND AND AIM: To study the changes of peroxisome proliferator-activated receptor γ expressions at different time points in rat lung after phosgene exposure and explore the role of PPAR-γ in this pathogenesis. MATERIALS AND METHODS: 60 male rats were randomly divided into 6 groups with 10 in each group.

背景与目的：研究大鼠经光气染毒后，不同时间点肺组织中过氧化物酶体增殖体激活受体γ的表达变化，以探讨PPAR-γ在光气致大鼠急性肺损伤中的作用。

Solid at room temperature, phosgene is a solid, relatively stable, even when boiling, only a small amount of decomposition, as a substitute for phosgene, not only low-toxic and easy to use, and the mild reaction conditions, good selectivity and high yield.

固体光气在室温下是固体，比较稳定，即使沸腾时，也仅仅少量的分解，作为光气的替代物，不仅毒性低，使用方便，而且反应条件温和，选择性好，收率高。

Synthesis of di carbonate using bis carbonate and paracresol was a new approach and technology.

研究了三光气与邻甲酚反应合成碳酸邻甲酚酯的新方法，并对酚钠盐浓度、温度、三光气用量等因素的考察。

The high-purity propionyl chloride was synthesized using propanoic acid and triphosgene as raw materials.

以丙酸和三光气为原料，用三光气法合成了纯度较高的丙酰氯。

The dehydration of sulphonyl derivatives of N-alkylformamide using phosphorus oxychloride in the presence of triethylamine at 0-10℃ provides a useful method for the preparation on sulphonylmethyl isocyanides e.g.

光气同三乙胺或是嘧啶是一组有效的制取异氰基化合物的试剂，但是，由于光气在安全性方面的问题它不适宜在大规模上制取异氰基化合物。

Make a summary: Low member with solid smooth angry substitute drama poisonous smooth angry synthesis to measure flame retardant assemble carbon sour ester.

摘 要：采用固体光气代替剧毒光气合成低分子量阻燃聚碳酸酯。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。