5-tert-butyl-2-phenyloxazole | 1299491-26-1

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 唑类
• 英文名称: 5-tert-butyl-2-phenyloxazole
• 英文别名: 5-(1,1-Dimethylethyl)-2-phenyloxazole；5-tert-butyl-2-phenyl-1,3-oxazole
• CAS: 1299491-26-1
• 化学式: C₁₃H₁₅NO
• 分子量: 201.268
• InChiKey: QDMZSULSKHNKNJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  15
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  26
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  5-tert-butyl-2-phenyloxazole 、 二苯基乙炔 在 dichloro(pentamethylcyclopentadienyl)rhodium (III) dimer 、 水 、 copper diacetate 、 双三氟甲烷磺酰亚胺银盐 、 三甲基乙酸 作用下， 以 甲醇 为溶剂， 反应 12.0h， 以60%的产率得到2-(3,3-dimethyl-2-oxobutyl)-3,4-diphenylisoquinolin-1(2H)-one
  参考文献：
  名称：

  Rh（III）催化的三组分级联环化反应生成异喹诺酮衍生物的N-氧丙基链

  摘要：

  开发强大的方法以在异喹诺酮支架的N-取代基处引入多功能官能团仍然是一个巨大的挑战。在本文中，我们报道了一种新颖的三组分级联环化反应，可通过铑（III）催化的CH-H活化/环化/亲核攻击有效地构建异喹诺酮衍生物的N-氧丙基链，恶唑同时用作指导基团和潜在基团。功能化试剂。

  DOI：

  10.1039/d0ob02389b
• 作为产物：
  描述：

  N-(3,3-dimethyl-2-oxobutyl)benzamide 在 吡啶 、 三氯氧磷 作用下， 反应 3.0h， 以71%的产率得到5-tert-butyl-2-phenyloxazole
  参考文献：
  名称：

  Catalytic Asymmetric Hydrogenation of N-Boc-Imidazoles and Oxazoles

  摘要：

  Substituted imidazoles and oxazoles were respectively hydrogenated into the corresponding chiral imidazolines and oxazolines (up to 99% ee). The highly enantioselective hydrogenation was achieved by using the chiral ruthenium catalyst, which is generated from Ru(eta(3)-methallyl)(2)(cod) and a trans-chelating chiral bisphosphine ligand, PhTRAP. This is the first successful catalytic asymmetric reduction of 5-membered aromatic rings containing two or more heteroatoms.

  DOI：

  10.1021/ja201543h

文献信息

• Synthesis of Substituted Oxazoles by Visible-Light Photocatalysis
  作者：Tanmay Chatterjee、Ji Young Cho、Eun Jin Cho

  DOI：10.1021/acs.joc.6b00989

  日期：2016.8.19

  A simple and practical method for the synthesis of substituted oxazoles has been developed using readily available α-bromoketones and benzylamines by visible-light photocatalysis at room temperature. The process, which requires 1 mol % of [Ru(bpy)3]Cl2 photocatalyst with K3PO4 and CCl3Br, is effective for accessing a variety of valuable oxazole compounds. The synthetic utility of our protocol was also

  已经开发了一种简单而实用的合成取代的恶唑的方法，该方法使用易得的α-溴代酮和苄胺，在室温下通过可见光光催化进行合成。该方法需要1摩尔％的具有K 3 PO 4和CCl 3 Br的[Ru（bpy）3 ] Cl 2光催化剂，可有效地获得各种有价值的恶唑化合物。我们的协议的合成效用也通过制备天然产物texaline得到了证明。
• Practical oxazole synthesis mediated by iodine from α-bromoketones and benzylamine derivatives
  作者：Wen-Chao Gao、Ruo-Lin Wang、Chi Zhang

  DOI：10.1039/c3ob41566j

  日期：——

  system of I2/K2CO3 could efficiently promote the oxazole synthesis from α-bromoketones and benzylamine derivatives in DMF. This method was not only suitable for 2,5-diaryl oxazole synthesis but also for 2,4,5-trisubstituted oxazole and 5-alkyl/alkenyl oxazole synthesis. Furthermore, this method was successfully applied to a one-step synthesis of a natural product halfordinol in 62% yield.

  I 2 / K 2 CO 3试剂体系可有效促进DMF中α-溴代酮和苄胺衍生物的恶唑合成。该方法不仅适用于2，5-二芳基恶唑的合成，而且适用于2，4，5-三取代的恶唑和5-烷基/烯基恶唑的合成。此外，该方法已成功地以62％的收率成功地一步合成了天然产物Halfordinol。
• Rh(<scp>iii</scp>)-Catalyzed olefination to build diverse oxazole derivatives from functional alkynes
  作者：Yuan He、Ting Zheng、Yin-Hui Huang、Lin Dong

  DOI：10.1039/d1ob00507c

  日期：——

  A novel Rh(III)-catalyzed olefination reaction of oxazoles to generate diverse oxazole skeleton derivatives has been realized by directly using oxazole as the directing group. The reaction could tolerate many functional groups, affording complex oxazole derivatives with long chain alkenyls in moderate to good yields, which might find applications in the construction of diverse compounds.

  通过直接使用恶唑作为导向基团，实现了一种新颖的Rh( III )催化恶唑烯化反应生成多种恶唑骨架衍生物。该反应可以耐受许多官能团，以中等至良好的产率提供具有长链烯基的复杂恶唑衍生物，这可能在构建多种化合物中得到应用。
• A Heterogeneous Gold(I)-Catalyzed [2 + 2 + 1] Annulation of Terminal Alkynes, Nitriles, and Oxygen Atoms Leading to 2,5-Disubstituted Oxazoles
  作者：Weisen Yang、Rongli Zhang、Feiyan Yi、Mingzhong Cai

  DOI：10.1021/acs.joc.7b00386

  日期：2017.5.19

  heterogeneous gold(I)-catalyzed [2 + 2 + 1] annulation of terminal alkynes, nitriles, and oxygen atoms has been achieved by using an MCM-41-immobilized phosphine–gold(I) complex as catalyst and 8-methylquinoline N-oxide as oxidant under mild conditions, yielding a variety of 2,5-disubstituted oxazoles in good to excellent yields with broad substrate scope. The new heterogeneous gold(I) catalyst can

  通过使用固定化MCM-41的膦-金（I）络合物作为催化剂和8-甲基喹啉，实现了末端炔烃，腈和氧原子的第一个异质金（I）催化环化[2 + 2 + 1]在温和的条件下使用N-氧化物作为氧化剂，可以在宽范围的底物范围内以良好或优异的收率产生各种2,5-二取代的恶唑。通过简单过滤反应溶液，可以轻松回收新的多相金（I）催化剂，并循环至少八次，而不会明显降低活性。
• FIVE-MEMBERED RING-SUBSTITUTED PYRIDAZINOL COMPOUNDS AND DERIVATIVES, PREPARATION METHODS, HERBICIDAL COMPOSITIONS AND APPLICATIONS THEREOF
  申请人：Qingdao Kingagroot Chemical Compound Co., Ltd.

  公开号：US20210032222A1

  公开（公告）日：2021-02-04

  The invention belongs to the technical field of agricultural chemicals, and in particular relates to a five-membered ring-substituted pyridazinol compound and a derivatives thereof, preparation method, herbicidal composition and application thereof. The compound is as shown in Formula I: wherein, X is halogen, cyano, alkyl, halogenated alkyl, alkoxy, halogenated alkoxy, R 1 R 2 N—(C═O)—, or R 1 R 2 N—, etc.; Ar is Het is a 5-membered unsaturated ring, the ring contains, besides the 1-C atom, 0 to 4 atoms or radicals follows to form the ring: O, NR b , S; R a is one or more groups selected from: hydrogen, halogen, R—O—(CH 2 ) n —, and R 1 R 2 R 3 SiO—, etc.; m is 0 or 1, n and q are independently an integer from 0 to 8, p is an integer from 1 to 8; R is hydrogen, or a halogen-containing or not containing group selected from alkyl, and alkenyl, etc.; R b , R 1 , R 2 , R 3 are each independently hydrogen, nitro, hydroxy, or amino, etc. The compound and the derivative, as well as the composition thereof have very high herbicidal activity and good selectivity, and are safe for crops.