ethyl (E)-3-(difluoromethyl)but-2-enoate | 143266-32-4

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: ethyl (E)-3-(difluoromethyl)but-2-enoate
• 英文别名: ethyl (E)-3-(difluoromethyl)-2-butenoate；(E)-3-(Difluoromethyl)-2-butenoic acid ethyl ester；ethyl (E)-4,4-difluoro-3-methylbut-2-enoate
• CAS: 143266-32-4
• 化学式: C₇H₁₀F₂O₂
• 分子量: 164.152
• InChiKey: SEXJBDFDPSUHHP-SNAWJCMRSA-N

物化性质

• 沸点：
  185.1±40.0 °C(Predicted)
• 密度：
  1.078±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.2
• 重原子数：
  11
• 可旋转键数：
  4
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  ethyl (E)-3-(difluoromethyl)but-2-enoate 在 二异丁基氢化铝 作用下， 以 二氯甲烷 、 环己烷 为溶剂， 反应 1.0h， 生成 (E)-3-(difluoromethyl)-2-buten-1-ol
  参考文献：
  名称：

  Dimethylallyltryptophan synthase. An enzyme-catalyzed electrophilic aromatic substitution

  摘要：

  Dimethylallyltryptophan (DMAT) synthase catalyzes the alkylation of L-tryptophan at C(4) by dimethylallyl diphosphate (DMAPP) in the first pathway-specific step in the biosynthesis of ergot alkaloids. The mechanism of the reaction was studied with analogs of both substrates. Five 7-substituted derivatives of N-acetyltryptophan (2, Z = OCH3, CH3, F, CF3, and NO2) were synthesized. The L enantiomers of the free amino acids were obtained by selective hydrolysis of the racemate using aminoacylase from Aspergillus. In addition, the E and Z fluoromethyl and difluoromethyl analogs of DMAPP (1, Y = CH3, CH2F, CHF2) were prepared. Rates of the enzyme-catalyzed reactions were measured for the dimethylallyl derivatives with L-tryptophan and for the L-tryptophan derivatives with DMAPP. In addition, the relative reactivities of the methanesulfonate derivatives of the DMAPP analogs were determined for solvolysis in aqueous acetone. A Hammett plot for the tryptophan analogs gave a good linear correlation with rho = -2.0. In addition, a Hammett plot of the logarithms of the relative rates of solvolysis and enzyme-catalyzed alkylation gave a positive linear correlation. These results indicate that the prenyl-transfer reaction catalyzed by DMAT synthase is an electrophilic aromatic substitution and is mechanistically similar to the electrophilic alkylation catalyzed by farnesyl diphosphate synthase.

  DOI：

  10.1021/ja00045a004
• 作为产物：
  描述：

  1,1-二氟丙酮 、 乙氧甲酰基亚甲基三苯基膦 以 异丙醚 为溶剂， 反应 80.0h， 生成 ethyl (Z)-3-(difluoromethyl)but-2-enoate 、 ethyl (E)-3-(difluoromethyl)but-2-enoate
  参考文献：
  名称：

  氟化异戊烯基腺嘌呤：合成和细胞分裂素活性。

  摘要：

  由简单的氟化酮合成了在烯丙基位置带有一个或两个氟原子的N 6-异戊烯腺嘌呤的类似物。发现单氟类似物比N 6-异戊烯腺嘌呤更具活性，并且与更有效的玉米素（另一种天然植物生长激素）相当。二氟类似物甚至比玉米蛋白更有效。

  DOI：

  10.1002/ijch.199900020

文献信息

• SUBSTITUTED CYANO CYCLOALKYL PENTA-2,4-DIENES, CYANO CYCLOALKYL PENT-2-EN-4-YNES, CYANO HETEROCYCLYL PENTA-2,4-DIENES AND CYANO HETEROCYCLYL PENT-2-EN-4-YNES AS ACTIVE SUBSTANCES
  申请人：BAYER CROPSCIENCE AKTIENGESELLSCHAFT

  公开号：US20170210701A1

  公开（公告）日：2017-07-27

  The invention relates to cyano cycloalkyl penta-2,4-dienes, cyano cycloalkyl pent-2-en-4-ynes, cyano heterocyclyl penta-2,4-dienes and cyano heterocyclyl pent-2-en-4-ynes of general formula (I), or the salts thereof, where [X-Y], Q, R 1 , R 2 , A 1 , A 2 , V, W, m and n have the definitions specified in the description. The invention also relates to a production method for same and to the use of same for increasing stress tolerance in plants against abiotic stress, and/or for increasing the plant yield.

  该发明涉及一般式(I)的氰基环烷基戊二烯、氰基环烷基戊-2-炔、氰基杂环烷基戊二烯和氰基杂环烷基戊-2-炔，或其盐，其中[X-Y]、Q、R1、R2、A1、A2、V、W、m和n的定义如描述中所指定。该发明还涉及同类物质的生产方法以及将其用于增加植物对非生物胁迫的抗逆性和/或增加植物产量。
• SUBSTITUTED 5-(BICYCLO[4.1.0]HEPT-3-EN-2-YL)PENTA-2,4-DIENES AND 5-(BICYCLO[4.1.0]HEPT-3-EN-2-YL)PENT-2-ENE-4-INES AS ACTIVE AGENTS AGAINST ABIOTIC STRESSES IN PLANTS
  申请人：Frackenpohl Jens

  公开号：US20140051577A1

  公开（公告）日：2014-02-20

  The invention relates to substituted 5-(bicyclo[4.1.0]hept-3-en-2-yl)penta-2,4-dienes and 5-(bicyclo[4.1.0]hept-3-en-2-yl)pent-2-ene-4-ines of the formula (I) and salts thereof, where the radicals R1, R2, R3, R4, R5, [X—Y] and Q are each as defined in the description, to processes for preparation thereof and to the use thereof for enhancing stress tolerance in plants with respect to abiotic stress, and/or for increasing plant yield.

  该发明涉及代换的5-(bicyclo[4.1.0]庚-3-烯-2-基)戊-2,4-二烯和5-(bicyclo[4.1.0]庚-3-烯-2-基)戊-2-烯-4-炔的化合物及其盐，其中基团R1、R2、R3、R4、R5、[X—Y]和Q的定义如描述中所示，以及其制备方法和用途，用于增强植物对非生物胁迫的抗压能力，和/或增加植物产量。
• COMPOUNDS FOR THE TREATMENT OF CNS DISORDERS
  申请人：Fuchs Klaus

  公开号：US20120115863A1

  公开（公告）日：2012-05-10

  The invention relates to novel cycloalkyl- or cycloalkenyl-substituted pyrazolopyrimidinones of formula (I), wherein Ā is selected from the group A 1 consisting of a C 3 -C 8 -cycloalkyl group or a C 4 -C 8 -cycloalkenyl group, whereby the members of C 3 -C 8 -cycloalkyl group being selected from the group of cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptanyl and cyclooctanyl; and the members of the C 4 -C 8 -cycloalkenyl group, being selected from cyclobutenyl, cyclopentenyl, cyclohexenyl, cycloheptenyl, cyclooctenyl, cyclopentadienyl, cyclohexadienyl, cycloheptadienyl, cyclooctadienyl, cycloheptatrienyl, cyclooctathenyl, cyclooctatetraenyl. The new compounds shall be used for the manufacture of medicaments, in particular medicaments for improving perception, concentration, learning and/or memory in patients in need thereof. Chemically, the compounds are characterised as pyrazolopyrimidinones with a cycloalkyl-moiety directly bound to the 1 position of the pyrazolopyrimidinone and a second substituent in the 6 position which is bound via an optionally substituted methylene-bridge. Further aspects of the present invention refer to a process for the manufacture of the compounds and their use for producing medicaments.

  该发明涉及具有以下结构的新型环烷基或环烯基取代的吡唑吡咪啉酮化合物（I），其中Ā选自A1组中的C3-C8环烷基或C4-C8环烯基，其中C3-C8环烷基组成员选自环丙基、环丁基、环戊基、环己基、环庚基和环辛基；而C4-C8环烯基组成员选自环丁烯基、环戊烯基、环己烯基、环庚烯基、环辛烯基、环戊二烯基、环己二烯基、环庚二烯基、环辛二烯基、环庚三烯基、环辛烷基、环辛四烯基。这些新化合物可用于制造药物，特别是用于改善患者感知、注意力、学习和/或记忆的药物。从化学上讲，这些化合物被描述为在吡唑吡咪啉酮的1位上直接连接有环烷基基团，并且在6位上通过一个可选取代的亚甲基桥连接有第二取代基。该发明的进一步方面涉及一种制造这些化合物的方法以及它们用于生产药物的用途。
• SUBSTITUTED 5-(CYCLOHEX-2-EN-1-YL)-PENTA-2,4-DIENES AND 5-(CYCLOHEX-2-EN-1-YL)-PENT-2-EN-4-INES AS ACTIVE AGENTS AGAINST ABIOTIC STRESS IN PLANTS
  申请人：Frackenpohl Jens

  公开号：US20140087949A1

  公开（公告）日：2014-03-27

  The invention relates to substituted 5-(cyclohex-2-en-1-yl)penta-2,4-dienes and 5-(cyclohex-2-en-1-yl)pent-2-en-4-ines of the formula (I) and their salts where the radicals R 1 , R 2 , R 3 , R 4 , [X—Y] and Q are each as defined in the description, to processes for preparation thereof and to the use thereof for enhancing stress tolerance in plants with respect to abiotic stress, and/or for increasing plant yield.

  该发明涉及代换的5-(环己-2-烯-1-基)戊-2,4-二烯和5-(环己-2-烯-1-基)戊-2-烯-4-炔的化合物(I)及其盐，其中基团R1、R2、R3、R4、[X—Y]和Q如描述中所定义，以及其制备方法和用途，用于增强植物对非生物胁迫的抗逆性，并/或增加植物产量。
• PYRAZOLOPYRIMIDINES AND THEIR USE FOR THE TREATMENT OF CNS DISORDERS
  申请人：Boehringer Ingelheim International GmbH

  公开号：EP2334684B1

  公开（公告）日：2017-08-02