Literatures: Kowalczyk; Skarzewski Polish Journal of Chemistry, 2002 , vol. 76, # 10 p. 1413 - 1417 Yield: ~2% |
Literatures: Studiengesellschaft Kohle mbH Patent: US6388141 B1, 2002 ; Location in patent: Page column 5-7 ; Yield: ~56% |