[3-(di-tert-butylphosphino)-1-ethoxyindene, P-Cr]pentacarbonylchromium | 159771-69-4

• 英文名称: [3-(di-tert-butylphosphino)-1-ethoxyindene, P-Cr]pentacarbonylchromium
• CAS: 159771-69-4
• 化学式: C₂₄H₂₉CrO₆P
• 分子量: 496.46
• InChiKey: SQYNGFUSJRTQMO-UHFFFAOYSA-N

反应信息

• 作为产物：
  描述：

  (3-di-tert-butylphosphino-1-ethoxy-3-phenylpropenyllidene)pentacarbonylchromium 以 苯 为溶剂， 生成 [3-(di-tert-butylphosphino)-1-ethoxyindene, P-Cr]pentacarbonylchromium
  参考文献：
  名称：

  通过过渡金属配合物进行有机合成。75.通过环烷基化碳烯络合物（M = Cr，W）进行环化反应生成的膦基萘和膦基茚

  摘要：

  1-Amino-2-ethoxy-4-phosphinonaphthalenes 6a,b (>90% yields) are obtained from (phenylalkynyl)carbene complexes (CO)(5)M=C(OEt)-C drop C-Ph (M = Cr, W) 1 by a novel two-step carbene/alkyne benzannulation, The first step involves the formation of(E)-(2-phenyl-2-phosphinoethenyl)carbene complexes (CO)5M=C(OEt)-CH=C(Ph)-PR(2) (E)-3a-c by 3-addition of secondary phosphines HPR(2) (R = t-Bu, c-C6W11) 2a,b to 1. A subsequent addition of isocyanides R(1)NC (R = t-Bu, c-C6H11) 4a,b to (E)-3a-c yields ketene imine complexes (Co)(5)M[R(1)N=C=C(OEt)-CH=C(Ph)-PR(2)] A by the ins ertion of 4 into the M=C bond of 3. (Metal-free) ketene imines are generated from A by ligand displacement with 4 and cyclize spontaneously to 6. Thermolysis of(E)3a-c affords (CO)(5)M phosphinoindene complexes 9 and 10. Reaction of 9 or 10 with pyridine yields phosphinoindenes 12 and pyridine complexes (CO)(5)M(C5H5N) 11. 10a, C24H29CrO6P, was characterized by X-ray diffraction. It crystallizes in space group P ($) over bar 1 No. 2 with cell parameters a = 9.412(1) Angstrom, b = 11.455(2) Angstrom, c 11.962(2) Angstrom, = 89.10(1)degrees, beta = 79.09(1)degrees, gamma = 88.60(1)degrees, Z = 2, R(1) = 0.063, and wR(2) = 0.117.

  DOI：

  10.1021/om00001a035