@article{CTT100583947,
  author = {Kozo Toyota and Keiko Horikawa and Rader S. Jensen and kohei Omori and Subaru Kawasaki and Shigekazu Ito and Masaaki Yoshifuji and Morita},
  title = {An Improved Preparative Method for 1,2-Diaryl-3,4-diphosphinidenecyclobutenes and Its Application to the Studies of 1,2-Bis(arylthienyl)-3,4-diphosphinidenecyclobutenes},
  journal = {Bull. Chem. soc. Jpn},
  year = 2007,
}

@article{CTT100609980,
  author = {Shigekazu Ito and Kozo Toyota and Masaaki Yoshifuji},
  title = {Reactions of a Sterically Protected 2,3-Dichloro-1,4-diphospha-1,3-butadiene with Some Alkyl and Hydrido Lithium Reagents},
  journal = {Heteroat. Chem.},
  year = 2000,
}

@article{CTT100609995,
  author = {Shigekazu Ito and Kozo Toyota and Masaaki Yoshifuji},
  title = {Preparation and Structure of 2,3-Dichloro-1,4-bis(2,4,6-tri-t-butylphenyl)-1,4-diphospha-1,3-butadiene},
  journal = {Chem. Lett.},
  year = 1998,
}

@article{CTT100609991,
  author = {Shigekazu Ito and Kozo Toyota and Masaaki Yoshifuji},
  title = {A Convenient Synthesis of a Sterically Protected 1,4-Diphosphabutatriene and Its Pentacarbonyltungsten Complexes},
  journal = {J. Organomet. Chem.},
  year = 1998,
}

@article{CTT100609992,
  author = {Shigekazu Ito and Kozo Toyota and Masaaki Yoshifuji},
  title = {Formation of 6,8-Di-t-butyl-3,4-dihydro-4,4-dimethyl-1-phosphanaphthalene by the Reaction of 2,2-Dibromo-1-(2,4,6-tri-t-butylphenyl)-1-phosphaethene with Butyllithium},
  journal = {Chem. Commun.},
  year = 1997,
}

@article{CTT100609994,
  author = {Masaaki Yoshifuji and Shigekazu Ito and Kozo Toyota and Masafumi Yasunami},
  title = {Reaction of 2,4-Di-t-butyl-6-methylphenylphosphonous Dichloride with Chloroform in the Presence of Lithium Diisopropylamide},
  journal = {Heteroat. Chem.},
  year = 1996,
}

@article{CTT100609996,
  author = {Masaaki Yoshifuji and Shigekazu Ito and Kozo Toyota and Masafumi Yasunami},
  title = {Preparation of Some Multi-functionalized Methylenephosphines by Reactions of Chloro[(2,4,6-tri-t-butylphenyl)phosphinidene]methyllithium with Carbonyl Compounds,” Bul},
  journal = {Bull. Chem. Soc. Jpn.},
  year = 1995,
}

@inproceedings{CTT100609981,
  author = {Shigekazu Ito and Kozo Toyota and Masaaki Yoshifuji},
  title = {Reactions of Sterically Protected 1-Halo- and 1-Pseudohalo-2-phosphaethenyllithiums},
  booktitle = {Phosphorus, Sulfur Silicon Relat. Elem.},
  year = 1999,
}