| | 1 | Author
| PeterI. Paetzold, Wolfgang Scheibitz, Ernst Scholl | Requires cookie* | | | Title
| Darstellung und Eigenschaften von 1.3.2-Dioxaborolandionen-(4.5) Preparation and Properties of l,3,2-Dioxaborolanediones-(4,5)  | | | | Abstract
| 2-Organo-l,3,2-dioxaborolanediones-(4,5) RBC204 (R = CHS , C2H5 , C6H5 , C6F5) are formed from anhydrous oxalic acid and dihalogeno-organo-boranes. The five-membered ring-compounds are strong Lewis acids. The thermal degradation yields CO, C02 , and organoboroxines (RBO) 3 . Zur Kondensation von Oxalsäure mit Boranen Während die Umsetzung von Oxalsäure mit Bor-säure in wäßrigem Milieu zu Oxalatoboraten mit vierfach koordiniertem B-Atom führt 2 , sind Kon-densationen nach der Reaktions-Gl. (1) bisher wenig X HO-r* Y-B + v . | | | |
Reference
| (Z. Naturforsch. 26b, 646 [1971]; eingegangen am 3. April 1971) | | | |
Published
| 1971 | | | |
Keywords
| 0 0 X: F, Cl, Br 2HX + Y-B, Y: X, R, Ar, f | | | |
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| | | | | TEI-XML for
| default:Reihe_B/26/ZNB-1971-26b-0646.pdf | | | | Identifier
| ZNB-1971-26b-0646 | | | | Volume
| 26 | |
| 2 | Author
| Herbert Meier, Ahmed Issa, Ursula Merkle | Requires cookie* | | | Title
| 5aH | | | | Abstract
| A supposed benzoxete is determined as a complex polycyclic system: cis,cis,cis-5 aH,10 aH,15 aH-tribenzo[b,f,j][l,4,7]trioxa[9 b]azaplienalene. The structure elucida-tion is performed by spectroscopycal methods (IR, *H NMR, 13 C NMR and mass spec-troscopy) and by degradation reactions in an acidic or an alkaline medium. | | | |
Reference
| Z. Naturforsch. 34b, 290—296 (1979); eingegangen am 28. September 1978 | | | |
Published
| 1979 | | | |
Keywords
| lOaH, 15aH-Tribenzo[b, f, j][l, 4, 7]trioxa[9b]azaphenalenes -Supposed Benzoxetes 3-Hydroxyaldehydes, Benzoxetes, Benzoxazines | | | |
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| | | | | TEI-XML for
| default:Reihe_B/34/ZNB-1979-34b-0290.pdf | | | | Identifier
| ZNB-1979-34b-0290 | | | | Volume
| 34 | |
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