二氯化锡

The study indicated that, with SnCl22H2O and TSA as the catalyst, the comparatively appropriate reaction conditions were as follows: the catalyst content was 0.5% to OLLA, polymerized at 180℃ for lob under a system vacuum of 0.98 MPa.

研究表明，较为适宜的工艺条件为：以二水合氯化亚锡(SnCl22H2O)和对甲基苯磺酸为催化剂，且SnCl22H2O相对于乳酸预聚体的质量比为0.5%，真空度－0.98MPa，温度180℃，反应时间10h。

The Effects of SnCl2/naphthalene Disulphonic Acid on the Microstructure of Polymers Prepared from D, L-lactic Acid

CEPS 思博网--文章书目；-1页数：5 需求点数：20 电子全文：请登入。篇名氯化亚锡／萘二磺酸对D， L-乳酸聚合物微结构的影响

In this study, the malondialdehyde content, the glutathione peroxidase activity, and the superoxide dismutase activity in black porgy Sparus macrocephalus were determined after the acute exposure to TBTCl at the concentration of 4 and 20 μg·L-1. Results showed that TBTClinhibited the SOD activity in S.macrocephalus gill slightly , but there was an obvious promotion on the SOD activity in S.macrocephalus liver.

摘 要：观察和比较了黑鲷 Sparus macrocephalus 在不同浓度的氯化三丁基锡（tri-n-butyltin chloride，TBTCl）溶液中暴露后，其鳃和肝脏组织中超氧化物歧化酶（superoxide dismutase，SOD）活性、丙二醛（malondialdehyde，MDA）含量和谷胱甘肽过氧化物酶（glutathione peroxidase，GPx）活性的变化情况。

Methods: 2ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2ethyl5nitro aniline. The product was then synthesized to 3methyl6nitro1Hindazole by using ringclosing reaction in the presence of NaNO2, and then ethylated to obtain 2,3diethyl6 nitro2Hindazole. The latter compound was then reduced by SnCl2/Hcl to get target compound 2,3diethyl6nitro2Hindazole.

以2乙基苯胺为原料经醋酐酰化、浓硝酸低温硝化及去酰基保护合成2乙基5硝基苯胺，后用亚硝酸钠关环得3甲基6硝基1H吲唑，经硫酸二甲酯甲基化得2，3二甲基6硝基2H吲唑，最后用氯化亚锡将其还原得到目标产物，通过1H NMR确定结构与目标产物一致。

Methods: 2-ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2-ethyl-5-nitro aniline. The product was then synthesized to 3-methyl-6-nitro-lH-indazole by using ring-closing reaction in the presence of NaNO2, and then ethylated to obtain 2, 3-diethyl-6- nitro-2H-indazole. The latter compound was then reduced by SnC12/Hcl to get target compound 2, 3-diethyl-6-nitro-2H-indazole.

以2-乙基苯胺为原料经醋酐酰化、浓硝酸低温硝化及去酰基保护合成2-乙基－5-硝基苯胺，后用亚硝酸钠关环得3-甲基－6-硝基－1H-吲唑，经硫酸二甲酯甲基化得2，3-二甲基－6-硝基－2H-吲唑，最后用氯化亚锡将其还原得到目标产物，通过1HNMR确定结构与目标产物一致。

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。