Synthesis, Purification, and Rotational Spectroscopy of (Cyanomethylene)Cyclopropane—An Isomer of Pyridine
作者:Brian J. Esselman、Samuel M. Kougias、Maria A. Zdanovskaia、R. Claude Woods、Robert J. McMahon
DOI:10.1021/acs.jpca.1c03246
日期:2021.7.1
The gas-phase rotational spectrum of (cyanomethylene)cyclopropane, (CH2)2C═CHCN, generated by a Wittig reaction between the hemiketal of cyclopropanone and (cyanomethylene)triphenylphosphorane, is presented for the first time. This small, highly polar nitrile is a cyclopropyl-containing structural isomer of pyridine. The rotational spectra of the ground state and two vibrationally excited states were
(氰亚甲基)环丙烷的气相旋转光谱,(CH 2)2 C=CHCN,由环丙酮的半缩酮和(氰基亚甲基)三苯基正膦之间的Wittig反应生成,首次呈现。这种小的、高极性的腈是吡啶的含环丙基的结构异构体。观察、分析了基态和两个振动激发态的旋转光谱,并在 130 到 360 GHz 范围内进行了最小二乘拟合。超过 3900 个 R-、P-和 Q-分支、基态旋转跃迁适合低误差、部分octic、A-和S-减少的哈密顿量,提供光谱常数的精确测定。两个最低能量的振动激发态 ν 17和 ν 27,形成一个显示小的a和b型共振的科里奥利耦合二元组。测量这两个状态的转换,并用最小二乘法拟合 I r表示中的两个状态、部分八进制、A 约化的哈密顿量,具有九个科里奥利耦合项(G a、G a J、G a K、G a JJ、F bc、F bc J、F bc K、G b和G b J)。观察到许多共振跃迁和九个标称状态间跃迁,可以非常准确地确定
Cyanomethylene cyclopropane, a useful dipolarophile and dienophile in [2+3] and [2+4] cycloadditions
作者:Marc Mauduit、Cyrille Kouklovsky、Yves Langlois
DOI:10.1016/s0040-4039(98)01496-8
日期:1998.9
Cyanomethylene cyclopropane, prepared for the first time on large scale, proved to be a reactive dipolarophile and dienophile in several cycloadditions. The reactivity of this compound has been compared with 3-methyl-2-butenenitrile, ethyl 3-methyl-2-butenoate and ethoxycarbonylmethylene cyclopropane.
[EN] STAT MODULATORS AND USES THEREOF<br/>[FR] MODULATEURS DE STAT ET LEURS UTILISATIONS
申请人:[en]RECLUDIX PHARMA, INC.
公开号:WO2023192960A1
公开(公告)日:2023-10-05
Provided are compounds of Formula (I) and pharmaceutically acceptable salts and compositions thereof, which are useful for treating a variety of conditions associated with STAT3 and/or STAT6.
16. Reactions of furan compounds. Part III. Formation of tetrahydrofuran, 2 : 3-dihydrofuran, and other substances by passage of tetrahydrofurfuryl alcohol vapour over a nickel catalyst
作者:Christopher L. Wilson
DOI:10.1039/jr9450000052
日期:——
Photoisomerization of (Cyanomethylene)cyclopropane (C<sub>5</sub>H<sub>5</sub>N) to 1-Cyano-2-methylenecyclopropane in an Argon Matrix
作者:Samuel A. Wood、Brian J. Esselman、Samuel M. Kougias、R. Claude Woods、Robert J. McMahon
DOI:10.1021/acs.jpca.3c08001
日期:2024.2.29
Broad-band ultraviolet photolysis (λ > 200 nm) of (cyanomethylene)cyclopropane (5) in an argonmatrix at 20 K generates 1-cyano-2-methylenecyclopropane (7), a previously unknown compound. This product was initially identified by comparison of its infrared spectrum to that predicted by an anharmonic MP2/6-311+G(2d,p) calculation. This assignment was unambiguously confirmed by the synthesis of 1-cya