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They were eucalyptol, bicyclo[2.2.1]heptan-2-one,1,7,7-trimethyl-,(1R)-, borneol, 1-methyl-2-(1-methyl ethenyl)-(1R-cis)-cyclobutaneethanol, limonene, 1-hydroxymethyl-7,7-dimethy lbicyclo[2.2.1]heptan-2-one,-spathulenol, 3,7,11,15-Tetramethyl-2-hexadecen-1-ol, isocitronellol,-9-Octadecenoic acid, heneicosane, respectively.

阿给中共有11个阿给炭没有检测出的成分,包括桉油精、D-樟脑、冰片、(1R-cis)- 1-甲基-2-(1-甲基乙基)环丁基乙醇、二戊、1-羟甲基-7,7-二甲基-双环[2.2.1]庚-2-酮、-匙叶桉油醇、3,7,11,15-四甲基-2-十六碳-1-醇、异香茅醇、-9-十八碳酸和廿一烷。

GC/MS analysis on the leaf oil indicated that the main components with a relative content of ≥3% were alloocimene (43.22%),α-pinene (13.63%),γ-terpinene (5.49%),-3, 7-dimethyl-, 2, 6-octadien-1-ol (3.58%),β-fenchyl alcohol (4.58%), and 2-amino-3, 5-dicyano-6-(4-methoxyphenoxy)-pyridine (3.67%).

用GC/MS联用方法,对巨尾桉挥发油进行鉴定,相对百分含量在3%以上的化合物有:α-蒎(13.63%)、别罗勒(43.22%)、γ-萜品(5.49%)、3,7-二甲基-2,6-辛二醇(3.58%)、β-小茴香醇(4.58%)和2-氨基-3,5-二氰基-6-(4-甲氧基苯氧基)-吡啶(3.67%)。

The progress of catalysts, which include composite-oxides catalysts and heteropoly compounds catalysts, for selective oxidation of isobutylene to methacrolein were summarized, the mechanism of this reaction on Mo-Bi catalysts was discussed.

本文综述了异丁选择氧化生成甲基丙醛催化剂,其中包括复合氧化物催化剂和杂多化合物催化剂等的研究现状,讨论了在Mo-Bi催化剂上异丁选择氧化生成甲基丙醛的反应机理。

Diallyl trisulfide was synthesized with a yield of 76.4% based on sodium thiosulfate, allyl bromide and sodium sulfide. And diallyl tetrasulfide was synthesized by the reaction of sulfur monochloride with ally1 mercaptan with a yield of 81.0%.

以硫代硫酸钠、丙基澳和硫化钠为原料,合成了二丙基三硫,产率为76.4%;以一氯化硫和丙硫醇为原料合成了二丙基四硫,产率为81.0%。

Exact butene, hexene and octene copolymers are a family of ethylene alpha olefin plastomers that bridge the gap between elastomers and plastics

烃塑性体产品系列之一,可满足介于弹性体和塑料之间的产品需求aExact丁、己和辛共聚物,属于乙

Exact butene, hexene and octene copolymers are a family of ethylene alpha olefin plastomers that bridge the gap between elastomers and plastic s

烃塑性体产品系列之一,可满足介于弹性体和塑料之间的产品需求aExact丁、己和辛共聚物,属于乙

ABSTRACT Immobilized penicillin acylase (from E.coli) was used to catalyze 7 phenylacetamido 3 E propenyl cephalosporanic acid hydrolyzation into 7 amino 3 E propenyl cephalosporanic acid. Then, trans APRA was acylated with hydroxyethyl ester of 4 hydroxy D phenylglycine to obtain trans cefprozil.

以7 苯乙酰氨基 3 E 丙基 3 头孢菌素 4 羧酸为原料,在青霉素酰化酶作用下,首先酶法水解得到3 E 丙基 3 头孢菌素 4 羧酸,过滤固相酶,滤液调pH分离得到反式APRA固体;在青霉素酰化酶作用下,反式APRA再与对羟基苯甘氨酸乙二醇酯缩合,得到反式头孢丙;酶法合成所得的产品与进口反式头孢丙对照品一致。

They are 4-(2- hydroxy-3-butynlenoxy) benzoic acid (1, WA), 5-chloro-7, 8-dihydroxy-7-methyl- 6-oxo-3- [ -3, 4-dihydroxy-3, 5-dimethyl-l-heptylene] -1H-8, 8a-dihydrobenzo [2, 3-c] pyran (2, WB),-2-(2-methyl-2-dibutene diamido)-2-butenoic acid (3, B5262), 3, 4-dihydro-9, 10-dihydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3- c] pyran-1-one (4, A73 semi-Vioxanthin), 8, 8'-bis (6, 9-dioxo-3,4-dihydro-10- hydroxy-7-methoxy-3-methyl-1H-naphtho [2, 3-c] pyran-1-one)(5, A122 Xanthomegnin), 2, 5-dioxo-3a-hydroxymethyl-3, 3a, 6, 6a-tetrahydro-furo [2, 3-b] furan (6, 1003-2), 7-acety1-5-chloro-6, 8-dioxo-7-methyl-3- [ -3, 5-dimethyl-1, 3- diheptylene] -4aH-benzo [2, 3-c] pyran (7, M2-2 sclerotiorin), respectively.

它们分别被命名为4-(2-羟基-3-丁炔氧基)苯甲酸(1,WA)、5-氯-7,8-二羟基-7-甲基-6-氧代-3-[-3,4-二羟基-3,5-二甲基-1-庚基]-1H-8,8a-二氢苯并[2,3-c]吡喃(2,WB)、-2-(2-甲基-2-丁二酰亚胺基)-2-丁酸(3,B5262)、3,4-氢-9,10-二羟基-7-甲氧基-3-甲基-1H-萘并[2,3-c]吡喃-1-酮(semi-Vioxanthin,4,A73)、8,8'-双(6,9-二氧代-3,4-二氢-10-羟基-7-甲氧基-3-甲基-1H-萘并[2,3-c]吡喃-1-酮)(Xanthomegnin,5,A122)、2,5-二氧代-3a-羟甲基-3,3a,6,6a-四氢-呋喃并[2,3-b]呋喃(6,1003-2),7-乙酰基-5-氯-6,8-二氧代-7-甲基-3-[-3,5-二甲基-1,3-庚二基]-4aH-苯并2,3-c]吡喃(Sclerotiorin,7,M2-2)。

A new method for synthesizing rosin allyl alcohol ester was studied. p-Toluenesulfonic acid allyl alcohol ester was first synthesized by O-acylation of allyl alcohol with p-toluene sulfonyl chloride, using NaOH as catalyst. Then rosin allyl alcohol ester was synthesized from sodium resinate and p-toluenesulfonic acid allyl alcohol ester.

探索了一种两步合成松香丙醇酯的新方法,即先以丙醇和时甲苯磺酰氯为原料,以NaOH为催化剂,通过O-酰化反应合成中间体对甲笨磺酸丙醇酯,再与松香钠皂发生亲核取代反应合成目标产物松香丙醇酯。

The results showed that there are 42 kinds of matters in health trunk, among which, the biggest relative mass fraction was santolina triene (16.04%), the second was α-fenchee (14.24%), and 43 kinds of matters were found from damaged trunk, the highest was β-pinene (18.07%), the second was α-pinene (12.39%).

结果表明:健康鱼鳞云杉干部挥发性物质共42种成分,其中相对质量分数最大的是神圣亚麻三(16.04%),其次是α-葑(14.24%);被害鱼鳞云杉干部挥发性物质共43种,其中相对质量分数最大的成分是β-蒎(18.07%),其次是α-蒎(12.39%)。

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