132532-76-4Relevant academic research and scientific papers
SYNTHESIS OF 3-(1'-INDANYLIDENE)PHTHALIDES VIA WITTIG-HORNER REACTION OF DIMETHYL PHTHALIDE-3-PHOSPHONATES AND THEIR CONVERSION TO THE BCDE RING PART OF FREDERICAMYCIN A
Watanabe, Mitsuaki,Morimoto, Hitoshi,Furukawa, Sunao
, p. 2681 - 2686 (2007/10/02)
Wittig-Horner reaction of dimethyl phthalide-3-phosphonates with 1-indanones in the presence of bases was investigated.The 3-(1'-indanylidene)phthalides obtained above were transformed into dibenzeno-1,4-diketospirononanes, the BCDE ring system of fredericamycin A, by consecutive treatments with diisobutylaluminum hydride and pyridinium dichromate.
