1986
DOI: 10.1002/hlca.19860690605
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Eine neue Synthese von (±)‐Dihydrorecifeiolid

Abstract: A New Synthesis of ( f )-DihydrorecifeiolideEthyl I-(2'-formylethyl)-2-oxocyclooctane-l-carboxylate (2) prepared by Michuel reaction of ethyl 2-0x0-cyclooctane-I-carboxylate (1) was regioselectively methylated at the aldehyde group with (CH,)2TI[OCH(CH3)2]2 to give 3 (Scheme, 1 ) . The alcohol 3 was trcatcd with Hu4NF to give the deethoxycarbonylated product 4 which by distillation gave the bicyclic enol ether 5. Oxidation (m-chloroperbenzoic acid) of 5 and reduction of the resulting oxolacton 6 yielded the ti… Show more

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Cited by 19 publications
(10 citation statements)
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References 28 publications
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“…[127] in den HCA publiziert. Der Aufbau vielgliedriger Lactone nach diesem Konzept wurde von Manfred Hesse und B. Milenkol: [128] in den HCA beschrieben. Eine ganz allgemeine Ubersicht uber 'Ring Enlargement in Organic Chemistry' bietet das unter diesem Titel erschienene Buch von Heme [129].…”
Section: )unclassified
“…[127] in den HCA publiziert. Der Aufbau vielgliedriger Lactone nach diesem Konzept wurde von Manfred Hesse und B. Milenkol: [128] in den HCA beschrieben. Eine ganz allgemeine Ubersicht uber 'Ring Enlargement in Organic Chemistry' bietet das unter diesem Titel erschienene Buch von Heme [129].…”
Section: )unclassified
“…Zu einer Lsg. C0,R); 91,79, 91,72, 91,36, 91,26 (44 C(5)); 58,22,57,85,57,63,56,90(4d,C(1));52, 41,52,32(2y,CH3O);47,25,47,13,46,15,44,99(4r);42,17(d,C(4));40, 31, 40,18 (2t); 32,77, 31.75 (2d, C(4)); 30,66, 30,59 (2t); 30,28 (d, C(4)); 29,96,29,31,28,78,28,65,27,98,27,235,27,66,27,62,27,36,26.84,26,81,26,75,26,65,26,62,26,54,26,50,26,34,26,28,26,19,26,14,26,08,26,03,25,98,25,87,25,…”
Section: 4-mefhyl-5-ni~ro-2-oxocyc[open1adecancurbons~ure-m~1hy~es1ermentioning
confidence: 99%
“…THF innerhalb von 2 h mgegeben, 2 h geriihrt, das Gemisch auf 20" erwirmt und 1 2960,2880,1680,1600,1570,1550,1450,1380,1315,1255,1220,1110 2,40-2,12 (m, 1,5 H); 2,10-1,84 (1% 0,7 H). ',C-NMR (Keto-Form): 193,3 (s, CO); 141, 4,135,l (2s);133,7,130,5,129,9,127,3 (44;92,5 (d,CHNO,);32,9,27,0,22,7 (31 (19), 133(18), 132(21), 131(100), 130(26), 129(96), 128(24), 127(11), 118(22), 117(17), 116(32), 115 53 (11), 51 (26),50 (13). Anal.…”
Section: Ringerweiterungen Zuunclassified
“…134,4 (d); 130,7, 130,5 (2s); 128,8, 128,6, 12X,2 (3d); Y4,6,94,3 (2s. CNO,);67,4,67,3 (2d,CHOH); 33,2 (f); 31,8, 31,5 (2t);30,2,30,l (2t);25,4 ( I ) ;23,6,23,3 (29,CH,) 181(13),173(17),172(21), 171(36),159(38),158(17), 157(87), 156(19); 155(12) , 149(15),146(29),145(44),144(17),143(27),141(16),133(19),132(10),131(44),130(15),129(56),128 (37), 127 (14) ,Hl,NO,(263,30):C63,87,H6,51,N5,32;gef. :C63,58,H6,69,NS,16. 3.…”
Section: Ringerweiterungen Zumentioning
confidence: 99%
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