1974
DOI: 10.1002/cber.19741070804
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Die Darstellung optisch aktiver Tricarbonyl(cyclobutadien)eisen‐Komplexe

Abstract: Wie kiirzlich mitgeteilt, ist es uns gelungen, das Auftreten von freiem Cyclobutadien bei der Oxidation eines optisch aktiven Tricarbonyl(cyc1obutadien)eisen-Komplexes nachzuweisenl). Wir beschreiben hier die Synthese des bei dieser mechanistischen Untersuchung benotigten chiralen Cyclobutadienkomplexes 1 c. Beschrieben wurde auch die Darstellung eines partiell optisch aktiven Tricarbonyl(cyc1o-butadien)eisen-Komplexes 8). (1973).

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Cited by 18 publications
(2 citation statements)
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“…In 1999, Zembower and co-workers reported the synthesis of the three symmetrical regioisomeric ED-110 analogues 1075a-c and ED-110 (1017), which differ in the position of the hydroxy groups. The reaction of N-(benzyloxymethyl)dibromomaleimide 1048d (prepared by protection of dibromomaleimide with benzyloxymethyl chloride) 762,763 with the magnesium halide salts of the benzyloxyindoles 1058a-d 764 The R-methoxy ketone (+)-1081 might be accessible from the aldehyde (+)-1080 via a Demjanov-Tiffeneau-like ring expansion. The aldehyde (+)-1080 should be readily available by reduction of (+)-1079a, a precursor of (+)-K-252a (1000).…”
Section: Synthesis Of Staurosporinone (K-252c)mentioning
confidence: 99%
See 1 more Smart Citation
“…In 1999, Zembower and co-workers reported the synthesis of the three symmetrical regioisomeric ED-110 analogues 1075a-c and ED-110 (1017), which differ in the position of the hydroxy groups. The reaction of N-(benzyloxymethyl)dibromomaleimide 1048d (prepared by protection of dibromomaleimide with benzyloxymethyl chloride) 762,763 with the magnesium halide salts of the benzyloxyindoles 1058a-d 764 The R-methoxy ketone (+)-1081 might be accessible from the aldehyde (+)-1080 via a Demjanov-Tiffeneau-like ring expansion. The aldehyde (+)-1080 should be readily available by reduction of (+)-1079a, a precursor of (+)-K-252a (1000).…”
Section: Synthesis Of Staurosporinone (K-252c)mentioning
confidence: 99%
“…In 1999, Zembower and co-workers reported the synthesis of the three symmetrical regioisomeric ED-110 analogues 1075a − c and ED-110 ( 1017 ), which differ in the position of the hydroxy groups. The reaction of N -(benzyloxymethyl)dibromomaleimide 1048d (prepared by protection of dibromomaleimide with benzyloxymethyl chloride) , with the magnesium halide salts of the benzyloxyindoles 1058a − d provided the monoindolylmaleimides 1070a − d . The monoindolylmaleimides 1070a − d were glycosylated with 2,3,4,6-tetra- O -benzyl-α- d -glucose 1071 under Mitsunobu conditions , to afford the glycosyl derivatives 1072a − d .…”
Section: 2 Palladium-mediated Syntheses Of Indolo[23-a]carbazolesmentioning
confidence: 99%