pentacarbonyl(1-dimethylamino-3-phenyl-2-propynylidene)tungsten | 63339-35-5

• 英文名称: pentacarbonyl(1-dimethylamino-3-phenyl-2-propynylidene)tungsten
• CAS: 63339-35-5
• 化学式: C₁₆H₁₁NO₅W
• 分子量: 481.117
• InChiKey: YCBNACHGYZXNPG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  pentacarbonyl(1-ethoxy-3-phenylpropyn-1-ylidene)tungsten 、 偏二甲肼 以 乙醚 为溶剂， 以40%的产率得到pentacarbonyl[1-(2',2'-dimethylhydrazino)-3-phenylpropynylidene]tungsten
  参考文献：
  名称：

  Organic Syntheses via Transition Metal Complexes. 78. Hydrazinolysis of Alkynylcarbene Complexes of Chromium and Tungsten. Formation of Hydrazinocarbene, Imidate, Pyrazolidinylidene, and Nitrile Complexes

  摘要：

  Hydrazinolysis of alkynylcarbene complexes (CO)(5)M=C(OEt)C=Ph (1, M = W; 1', M = Cr) with mono- and 1,2-dimethylhydrazine MeHNNHR (2a,b) (R = Me, H) affords three different-type compounds: hydrazinocarbene complexes (CO)(5)M=C(NMe-NHR)C=CPh [(E/Z)-3a,b], imidate complexes (CO)(5)M[MeN=C(OEt)-C=CPh] [(E/Z)-4a], and pyrazolidinylidene complexes 5a,b. Hydrazinolysis of 1/1' with 1,l-dimethylhydrazine or (unsubstituted) hydrazine H(2)NNR(2) (2c,d) (R = Me, H) yields hydrazinocarbene complexes (CO)(5)M=C(NHNR(2))C=CPh [(E/Z)-3c], imidate complexes (CO)(5)M[HN=C(OEt)C=CPh] [(E/Z)-4a], and benzonitrile complexes (CO)(5)M(N=CPh)(8). Hydrazinolysis of 1 with H(2)NNHR (2e,f) (R = COMe, Ph) gives pyrazoles 12e,f as the only products. The product composition of the reactions of 2a-d with 1 is markedly influenced by the reaction temperature. Reaction of 1 with N- and O-methylhydroxylamines (13, 14) affords imidate complexes 4 only. The hydrazinocarbene complexes (E)-3a and (Z)-3c were characterized by X-ray diffraction. Both compounds crystallize in space group P $($) over bar$$ 1 (No. 2): (E)-3a, C16H12N2O5W, cell parameters a = 8.501(2) Angstrom, b = 9.645(2) Angstrom, c = 11.860(2) Angstrom, alpha = 103.56(2)degrees, beta = 95.59(2)degrees; gamma = 111.76(2)degrees, Z = 2, R(1) = 0.043, and wR(2) = 0.083; (Z)-3c, C16H12N2O5W, cell parameters a = 9.380(3) Angstrom, b = 9.685(4) Angstrom, c = 10.804(3) Angstrom, alpha = 84.77(5)degrees, beta = 80.74(3)degrees, gamma = 66.47(3)degrees, Z = 2, R(1) = 0.036, and wR(2) = 0.086.

  DOI：

  10.1021/om00005a048