@article {5167,
	title = {A dehydrogenated cycloadduct of N-phenylmaleimide and the azomethine ylide derived from ninhydrine and phenylalanine: Structure and conformation},
	journal = {Monatshefte Fur Chemie},
	volume = {132},
	number = {10},
	year = {2001},
	note = {ISI Document Delivery No.: 492THTimes Cited: 1Cited Reference Count: 14},
	month = {Oct},
	pages = {1213-1224},
	type = {Article},
	abstract = {{The structure of the dehydrogenation product 1 {\textquoteright} ,3a {\textquoteright} -dihydro-3 {\textquoteright}-((1,3-dioxoindan-2-ylidene)-phenyl-methyl)-5 {\textquoteright} -phenyl-spiro-(indan-2,1 {\textquoteright} -pyrrolo[3,4-c]pyrrole)-1,3,4 {\textquoteright} ,6 {\textquoteright}-(5 {\textquoteright}H, 6a {\textquoteright}H)-tetrone derived from the cycloadducts (+/-)-(3a {\textquoteright}S,6a {\textquoteright}R)-1 {\textquoteright} ,3a {\textquoteright} -dihydro-3 {\textquoteright}-((R)-alpha-(1,3-dioxoindanyl)-benzyl)-5 {\textquoteright} -phenyl-spiro-(indan-2,1 {\textquoteright} -pyrrolo[3,4-c]pyrrole)-1,3,4 {\textquoteright} ,6 {\textquoteright} (5H,6a {\textquoteright}H)-tetrone and/or (+/-)-(3a {\textquoteright}S,6a {\textquoteright}R)-1 {\textquoteright} ,3a {\textquoteright} -dihydro-3 {\textquoteright}-((S)-alpha-(1,3-dioxoindanyl)-benzyl)-5 {\textquoteright} -phenyl-spiro-(indan-2,1 {\textquoteright} -pyrrolo[3,4-c]pyrrole)-1,3,4 {\textquoteright} ,6 {\textquoteright} (5H,6a {\textquoteright}H)-tetrone, which were synthesized by 1,3-dipolar cycloaddition of N-phenylmaleimide to 2-((2-(1,3-dioxoindan-2-yl)-2-phenyl-ethenyl)-imino)-indan-1,3-dione, was determined by X-ray analysis. Crystal data (CCD, 180K): rhombohedral, R (3) over bar},
	keywords = {dynamic H-1 NMR spectroscopy, molecular modeling, spiro compounds, X-ray structure determination},
	isbn = {0026-9247},
	url = {<Go to ISI>://000172183300010},
	author = {Preu, L. and Kliegel, W. and Rettig, S. J. and Trotter, J.}
}
