对苯二甲酸二叔丁酯 | 28313-42-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 中文名称: 对苯二甲酸二叔丁酯
• 英文名称: di-tert-butyl terephthalate
• 英文别名: Terephthalsaeure-di-tert-butylester；terephthalic acid-di-tert-butyl ester；ditert-butyl benzene-1,4-dicarboxylate
• CAS: 28313-42-0
• 化学式: C₁₆H₂₂O₄
• 分子量: 278.348
• InChiKey: JAIQCFIFVNAAAY-UHFFFAOYSA-N

物化性质

• 熔点：
  119.5-120 °C
• 沸点：
  175 °C(Press: 0.5 Torr)
• 密度：
  1.052±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  20
• 可旋转键数：
  6
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  52.6
• 氢给体数：
  0
• 氢受体数：
  4

安全信息

• 危险性防范说明：
  P261,P280,P305+P351+P338,P304+P340
• 危险性描述：
  H302

反应信息

• 作为反应物：
  描述：

  对苯二甲酸二叔丁酯 在 4-二甲氨基吡啶 、 氢氧化钾 、 盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 、 三氟乙酸 作用下， 以 二氯甲烷 、 叔丁醇 为溶剂， 生成 4-<<<(4-chlorophenyl)sulfonyl>amino>carbonyl>benzoic acid
  参考文献：
  名称：

  Inhibition of human leukocyte elastase (HLE) by N-substituted peptidyl trifluoromethyl ketones

  摘要：

  A series of tripeptides possessing trifluoromethyl or aryl ketone residues at P1 were prepared and evaluated both in vitro and in vivo as potential inhibitors of human leukocyte elastase (HLE). Tripeptides containing non naturally occurring N-substituted glycine residues at the P2-position have been demonstrated to be potent in vitro inhibitors of HLE, with IC50 values in the submicromolar range. Sterically demanding substituents on the P2-nitrogen have no detrimental effect on in vitro potency. The inhibition process presumably acts via hemiketal formation with the active site Ser195 of HLE, and is facilitated by the strongly electron withdrawing trifluoromethyl functionality. Deletion of the amino acid at the P3-subsite region affords inactive compounds. Valine is the preferred residue at the P1-position, whereas the corresponding glycine, alanine, alpha,alpha-dimethylglycine, or phenylalanine analogues are all inactive. The compounds described herein all confer a high degree of in vitro specificity when tested against representative cysteine, aspartyl, metallo, and other serine proteases. One of the most potent in vitro inhibitors is (3RS)-N-[4-[[[(4-chlorophenyl)sulfonyl]amino]carbonyl]phenyl]oxomethyl]-L-valyl-N-(2,3-dihydro-1H-inden-2-yl)glycine N-[3-(1,1,1-trifluoro-4-methyl-2-oxopentyl)]amide (20i; BI-RA-260) (IC50 = 0.084-mu-M). Compound 20i was also tested in hamsters in an elastase-induced pulmonary hemorrhage (EPH) model. In this model, intratracheal (it.) administration of 20i, 5 min prior to HLE challenge, effectively inhibited hemorrhage in a dose-dependent manner with an ED50 of 4.8-mu-g. The inhibitor 20i, 20-mu-g administered it. 24, 48, and 72 h prior to HLE challenge, exhibits significant inhibition against hemorrhage at all time points (97%, 64% and 49%, respectively). In a 21-day chronic model of emphysema in hamsters, 200-mu-g of HLE administered it. caused an elastase-induced emphysema in the lungs which can be quantitated histologically utilizing image analysis. In this assay, 20i significantly inhibited pulmonary lesions associated with septal destruction and increased alveolar spaces, when dosed at 20-mu-g it. 5 min prior to challenge with HLE.

  DOI：

  10.1021/jm00082a005
• 作为产物：
  描述：

  对苯二甲酰氯 在 吡啶 作用下， 以 水 、 叔丁醇 为溶剂， 生成 对苯二甲酸二叔丁酯
  参考文献：
  名称：

  Selected difluoro derivatives

  摘要：

  该发明披露了一系列二氟酮、单肽、二肽和三肽衍生物的化学式Ia、Ib和Ic：______________________________________（见示例后的页面上的化学式）Ia（见示例后的页面上的化学式）Ib（见示例后的页面上的化学式）Ic______________________________________PAL及其适当的盐，其中这些基团在规范中有定义。这些衍生物在抑制人白细胞弹性蛋白酶的作用方面是有用的。还公开了制造这些衍生物的方法和中间体，以及包括这些衍生物的药物组合物。

  公开号：

  US04880780A1

文献信息

• Retinoid-like compounds
  申请人：Bristol-Myers Squibb Company

  公开号：US05618839A1

  公开（公告）日：1997-04-08

  The present invention relates to a compound of formula I ##STR1## or a nontoxic pharmaceutically acceptable salt, physiologically hydrolyzable ester or solvate thereof, in which X is --O--CO--, --NH--CO--, --CS--NH--, --CO--O--, --CO--NH--, --COS--, --SCO--, --SCH.sub.2 --, --CH.sub.2 --CH.sub.2 --, --C.tbd.C--, --CH.sub.2 --NH--, --COCH.sub.2 --, --NHCS--, --CH.sub.2 S--, --CH.sub.2 O--, --OCH.sub.2 --, --NHCH.sub.2 -- or --CR.sup.5 .dbd.CR.sup.6 --; R.sup.m and R.sup.k are independently hydrogen, halogen, C.sub.1-6 alkyl, hydroxy, C.sub.1-6 alkyloxy or nitro; n is zero or one; R.sup.4 is --(CH.sub.2).sub.t --Y, C.sub.1-6 alkyl, or C.sub.3-6 cycloalkyl; R.sup.1 is --CO.sub.2 Z, C.sub.1-6 alkyl, CH.sub.2 OH, --CONHR.sup.y, or CHO; R.sup.2 and R.sup.3 are independently hydrogen or C.sub.1-6 alkyl; R.sup.a and R.sup.b are independently hydrogen or C.sub.1-6 alkyl; but when n is one, R.sup.a and R.sup.b together can form a radical of the formula ##STR2## Y is naphthyl or phenyl, both radicals can be optionally substituted with one to three same or different C.sub.1-6 alkyl or halogen; Z is hydrogen or C.sub.1-6 alkyl; R.sup.5, R.sup.6 and R.sup.y are independently hydrogen or C.sub.1-6 alkyl; and t is zero to six.

  该发明涉及式I的化合物##STR1##或其无毒的药学上可接受的盐、生理可水解的酯或溶剂化合物，其中X为--O--CO--、--NH--CO--、--CS--NH--、--CO--O--、--CO--NH--、--COS--、--SCO--、--SCH.sub.2--、--CH.sub.2--CH.sub.2--、--C.tbd.C--、--CH.sub.2--NH--、--COCH.sub.2--、--NHCS--、--CH.sub.2S--、--CH.sub.2O--、--OCH.sub.2--、--NHCH.sub.2--或--CR.sup.5.dbd.CR.sup.6--; R.sup.m和R.sup.k独立地为氢、卤素、C.sub.1-6烷基、羟基、C.sub.1-6烷氧基或硝基；n为零或一；R.sup.4为--(CH.sub.2).sub.t--Y、C.sub.1-6烷基或C.sub.3-6环烷基；R.sup.1为--CO.sub.2Z、C.sub.1-6烷基、CH.sub.2OH、--CONHR.sup.y或CHO；R.sup.2和R.sup.3独立地为氢或C.sub.1-6烷基；R.sup.a和R.sup.b独立地为氢或C.sub.1-6烷基；但当n为一时，R.sup.a和R.sup.b可以共同形成式的基团##STR2##Y为萘基或苯基，两个基团可以选择性地用一个到三个相同或不同的C.sub.1-6烷基或卤素取代；Z为氢或C.sub.1-6烷基；R.sup.5、R.sup.6和R.sup.y独立地为氢或C.sub.1-6烷基；t为零到六。
• Optically active compound and photosensitive resin composition
  申请人：——

  公开号：US20030211421A1

  公开（公告）日：2003-11-13

  A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1): A −[( J ) m −( X-Pro )] n (1) wherein A represents a hydrophobic unit comprising at least one kind of hydrophobic groups selected from a hydrocarbon group and a heterocyclic group, J represents a connecting group, X-Pro represents a hydrophilic group protected by a protective group Pro which is removable by light exposure, m represents 0 or 1, and n represents an integer of not less than 1. The protective group Pro may be removable by light exposure in association with the photosensitizer (especially, a photo acid generator), or may be a hydrophobic protective group. The hydrophilic group may be a hydroxyl group or a carboxyl group. The photoactive compound has high sensitivity to a light source of short wavelength beams, for resist application, therefore, the photoactive compound is advantageously used for forming a pattern with high resolution.

  一种光活性化合物与光敏剂结合使用，由以下公式（1）表示： A −[( J ) m −( X-Pro )] n (1) 其中，A代表至少包括一种从烃基和杂环基中选择的疏水基的疏水单元，J代表连接基团，X-Pro代表由光照可去除的保护基团Pro保护的亲水基团，m代表0或1，n代表不少于1的整数。 保护基团Pro可以与光敏剂（特别是光酸发生剂）一起通过光照可去除，也可以是疏水保护基团。亲水基团可以是羟基或羧基。光活性化合物对短波长光源具有很高的敏感性，用于光刻应用，因此，该光活性化合物有利于形成具有高分辨率的图案。
• N-substituted amides
  申请人：Boehringer Ingelheim Pharmaceuticals, Inc.

  公开号：US05221665A1

  公开（公告）日：1993-06-22

  N-substituted amides which inhibit hydrolysis of elastin, are described, which compounds are tri-and di- fluoromethyl ketone amide and non-naturally occurring n-substituted amino acids derivatives.

  描述了抑制弹性蛋白水解的N-取代酰胺，这些化合物是三氟甲基酮酰胺和二氟甲基酮酰胺以及非天然N-取代氨基酸衍生物。
• An efficient method for the preparation of tert-butyl esters from benzyl cyanide and tert-butyl hydroperoxide under the metal free condition
  作者：Xiuling Chen、Yan Li、Minghu Wu、Haibing Guo、Longqiang Jiang、Jian Wang、Shaofa Sun

  DOI：10.1039/c6ra20966a

  日期：——

  A novel protocol to synthesize tert-butyl esters from benzyl cyanides and tert-butyl hydroperoxide has been successfully achieved. In the presence of tert-butyl hydroperoxide, Csp3–H bond oxidation, C–CN bond cleavage and C–O bond formation proceeded smoothly in one pot under the metal-free condition.

  从苄基氰化物和叔丁基氢过氧化物合成叔丁基酯的新方案已成功实现。在叔丁基过氧化氢的存在下，在无金属条件下，一锅中Csp 3 -H键的氧化，C-CN键的裂解和C-O键的形成顺利进行。
• A simple, powerful, and efficient method for transesterification
  作者：Otto Meth-Cohn

  DOI：10.1039/c39860000695

  日期：——

  Aromatic and α,β-unsaturated methyl esters undergo efficient transesterification at ambient temperature or below with primary, secondary, or (particularly) tertiary alcohols in the presence of butyl-lithium in tetrahydrofuran solution.

  在丁基锂存在下于四氢呋喃溶液中，在环境温度以下，芳族和α，β-不饱和甲酯与伯，仲或（尤其是）叔醇进行有效的酯交换反应。