查询词典 2-butene

Dihydrojasmone was synthesized from2-hexyl-5-methyl-1,2-oxaborolane,prepared frommethyl vinyl ketone and hexene,via the homologationwith 〓 followed by PCC oxidation and intra-molecular condensation.In stead of the oxidation ofthe C-B bond of 1,2-oxaborolane,fluoride inducedhalogenation of 2-alkoxy-1,2-oxaborolane was found togive 3-halopropanol.

硼氢化甲基乙烯基酮和已烯得到的2-已基-5-甲基-1，2-氧硼杂环戊烷与〓反应，再经PCC氧化，分子内缩合得到二氢茉莉酮。1，2-氧硼杂环戊烷的C-B键除氧化断裂之外，也能够在〓或KF作用下卤化断裂成碳卤键。

Amino-6-nitrobenzodifuroxan was prepared through a three-step reaction from starting material 3, 5-dinitrobenzoic acid:(1)3, 5-dinitroaniline (1) was synthesized from the reaction of DNBA and hydrazoic acid in inert solvent 1, 2-dichioroethane through Schmidt rearrangement with yield of 89.6%;(2) 1 was subjected to nitration to prepare pentanitroaniline (2) with yield of 51.1%;(3) The title compound was prepared from 2 and sodium azide in acetic acid through denitrogenation and then Schmidt rearrangement with yield of 86.8%, m.p.204℃～206℃.

以3，5-二硝基苯甲酸为原料经过3步反应合成了7-氨基6-硝基苯并二氧化吠咱：第1步反应，在二氯乙烷惰性溶剂中，DNBA与叠氮酸反应并发生Schmidt重排反应生成3，5-二硝基苯胺(1)，产率89.6%；第2步反应，1在含100%硫酸的硝硫混酸中硝化生成五硝基苯胺(2)，产率51.1%；第3步反应，2与叠氮酸反应，不经分离直接进行热解脱氮、Schmidt重排反应，得到目标化合物， m.p.204℃~ 206℃，产率86.8%。

Tetrachloroterephthalic acid was prepared by chlorinating terephthalic acid, oleumsolvent and iodine catalyst. Tetrachloroterephthalic acid was acylated by sulphurous oxychloride in the presence of DMF to form tetrachloroterephthaloyl chloride. The acyl chloride product was fluorinated by potassium fluoride and esterified by methanol to synthesize dimethyl tetrafluoroterephthalate. The ester was reduced with potassium borohydride and lithium chloride to give tetrafluoroterephthalyl alcohol. The above product was bromated in the hydrobromic acid to obtain 4-bromomethyl-2,3,5,6-tetrafluoro-benzene methanol. 4-Methyl-2,3,5,-6-tetrafluorobenzene ethanol was obtained by reducing the bromide with magnesium. In the exist of DCC and DMAP, tefluthrin was got by the condensation reaction between 4-methyl-2,3,5,6-tetrafluoro-benzene methanol and-(1RS,3RS)- 3-(2- chloro-3,3,3-trifluoro-1-propenyl)-2,2-dimethyl cycolpropanecar-boxylate acid.

对苯二甲酸与氯气在碘存在下以发烟硫酸为溶剂进行氯化制备四氯对苯二甲酸；再以DMF为催化剂与二氯亚砜反应生成四氯对苯二甲酰氯；以氟化钾为氟化剂，环丁砜为溶剂置换氟化，再与甲醇酯化得到四氟对苯二甲酸甲酯；以KBH4-LiCl为还原剂二甲醚为溶剂反应制得四氟对苯二甲基苄醇；以氯苯为溶剂在溴化氢溶液中溴化得到溴化产物；在乙醇溶液中经镁粉还原得到4-甲基-2，3，5，6-四氟苄醇；甲基苄醇与功夫酸在催化剂二环己基碳二亚胺和4-二甲氨基吡啶作用下缩合得到七氟菊酯，总收率达43.6%。

Objective: The experiment will to observe: 1、the compound composed of carriers and rhBMP-2 excels or is similar to autologous iliac crest in posterolateral intertransverse spine arthrodesis in rabbits, 2、it may eliminated thd nonuions, 3、To explore the biologic process in spine arthrodesis and the role that accelaterated spine arthrodesis, 4、the roles of HA in spine fusion, by those compounds are used in posterolateral intertransverse fusion in rabbits.

目的：本实验通过rhBMP-2、HA复合物在兔子腰椎后外侧横突间融合的过程，观察了解：（1）rhBMP-2复合物在兔子腰椎后外侧横突间融合中，其作用能否优于或至少与自体髂骨相同，能否取代自体髂骨，免去取骨术。（2） rhBMP-2复合物的应用能否消除不融合的发生。（3）进一步了解脊柱融合的生物学过程，及rhBMP-2在脊柱融合生物学过程中所起的作用。（4）探讨HA在脊柱融合中的作用。

Corneal epithelial implantation is 5 in 2000(0.25%). The rate of diffuse intralamellar keratitis is 5.5%(110/2000); corneal opacity are 2 in 2000(0.1%). Group B: Free cap are 2 in 500(0.4%); Corneal epithelial implantation is 1 in 500(0.2%);Diffuse intralamellar ketatitis are 27 in 500(5.4%), not any incomplete cap,broken flap and corneal opacity happened.

结果 A组：不完全瓣21眼占1.05%（21/2000）；游离瓣13眼占0.65%（13/2000）；碎瓣1眼占0.04%（1/2000）；角膜上皮植入占0.25%（5/2000）；弥漫性板层角膜炎占5.5%（110/2000）；角膜混浊2眼占0.1%（2/2000）。B组：游离瓣占0.4%（2/500）；角膜上皮植入占0.2%（1/500）；弥漫性板层角膜炎占5.4%（27/500），无不完全瓣、碎瓣及角膜混浊发生。

Results (1)In the group (109 eyes) with preoperative intraocular pressure≤21mmHg,sixty-four eyes were treated with trabeculectomy,and 31 eyes with slerectoiridectomy of which there were 9(14.1%) and 7(20.6%) eyes had undergone PAC respectively.There was no PAC in 11 eyes treated with iridencleisis;(2)In the group(175 eyes)with PIOP from 22 to 35 mmHg,there were 26 eyes(25.2%) and 15 eyes(32.6%) developing PAC of 103 eyes treated with trabeculectomy,and 46 eyes with slerectoiridectomy respectively,of 26 eyes with iridencleisis,there were 5 eyes(19.2%) developing PAC;(3)In the group(106 eyes)with PIOP＞35mmHg,there were 13 eyes(31%) developing PAC of 23 eyes with trabeculectomy,5 eyes(21.7%) developing PAC of 23 eyes with slerectoiridectomy.

结果 (1)术前眼压≤21mmHg(1mmHg=0.133kPa)者109只眼，小梁切除术64只眼，术后浅前房9只眼，占14.1%，巩膜咬切术31只眼，术后浅前房7只眼，占20.6%，虹膜嵌顿术11只眼，术后无浅前房发生；(2)术前眼压22-35mmHg者175只眼，小梁切除术103只眼，术后浅前房26只眼，占25.2%，巩膜咬切术46只眼，术后浅前房15只眼，占32.6%，虹膜嵌顿术26只眼，术后浅前房5只眼，占19.2%；(3)术前眼压＞35mmHg者106只眼，小梁切除术42只眼，术后浅前房13只眼，占31%，巩膜咬切术23只眼，术后浅前房5只眼，占21.7%，虹膜嵌顿术41只眼，术后浅前房5只眼，占12.2%。

The mRNA expression of MMP-2 in more than 4 lymphnodes positive is lower than in lymphnode 1-3 positive （P＜0.05）.The MMP-2 mRNA expression is irrelated with tissue grade,pathologic type,ER,PR and Her-2.Conclusion MMP-2 mRNA expression is upregulated in early clinical stage,lymph node metastatic early stage,and down regulated with tumor progressing.MMP-2 mRNA expression is related with the metastasis of breast cancer.

MMP-2 mRNA转录水平的表达与乳腺癌转移有关，MMP-2在转录水平的表达在肿瘤较小时上调，随着肿瘤的增其转录水平表达下调，随着肿瘤恶性程度的增加，其转录水平的表达量在下降，在肿瘤发生的早期表达上调，随着肿瘤的进展表达量下调。

Two novel coordination polymers, n (1) and {[Mn3222]·3H2O} n (2)( m -H2tpha=isophthalic acid, phen=1,10-phenanthroline, bipy=2,2′-bipyridine) were synthesized by hydrothermal method.

采用水热方法合成了2种结构新颖的Mn配位聚合物， n (1)，{[Mn3222]·3H2O} n (2)，( m -H2tpha=间苯二甲酸，phen=1，10-邻菲咯啉，bipy=2，2′-联吡啶)。

All tumors were histologically high grade (6 grade III and 10 grade IV). Three tumors showed heterologous elements, 2 osseous, and 1 rhabdomyoblastic. More often scattered than diffuse, S-100 protein staining was noted in 11 of 16 tumors and variable collagen IV staining in 10 of the 16. Immunoreactivity for p53 protein was diffuse and strong in 7 of 11 tumors. Twelve patients died within 17 months to 3 years of diagnosis, 1 was lost to follow-up, 2 are very recent cases, and 2 patients are currently alive, 1 after 2 recurrences, and another with spinal leptomeningeal metastases.

所有病例在组织学上都是高级别（6例III级和10例IV级）。3例肿瘤含有其他成分：2例含骨和1例含 rhabdomyoblastic.S-100蛋白染色显色于16例肿瘤中的11例，IV型胶原染色显色于16例中的10例，这些染色通常分散而不弥散。11例肿瘤中7例的p53蛋白免疫反应弥散且强烈。12例病人死于确诊后的17个月至3年，1例随访失败，2例是最近的病例，还有2例现在还活着，其中1例复发，另1例发生脊髓脑膜转移。

Flexor pollicis longus muscle tendon was about (0.44±2.42)mm lateral to the center of metatarsophalangeal joint. For cases of HV, extensor hallucis longus was about (9.32±3.46)mm lateral to tibialis anterior muscle at ankle transverse striation,(3.00±2.22)mm lateral to the center of tarsometatarsal joint.

在外翻的患者中，长伸肌腱在踝横纹处位于胫骨前肌外侧(9.32±3.46)mm，在跗跖关节中点外侧(3.00±2.22)mm，跖趾关节中点外侧(4.22±2.26)mm，止点位于末节趾骨基底中点(2.02±2.32)mm范围内，长屈肌腱在跖趾关节中点外侧(3.24±2.32)mm。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。