Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Horst Neudeck"'
Publikováno v:
Monatshefte fuer Chemie/Chemical Monthly. 132:267-278
During the synthesis of methyl substituted indanones by intramolecular cyclization of 3-phenyl-propionic acids, dimerization led to by-products which can be considered as dimeric indanones. The proton NMR spectra of these compounds exhibit pronounced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3929ef8bd79e7c4521e67713026c11e2
https://doi.org/10.1007/s007060170136
https://doi.org/10.1007/s007060170136
Autor:
Horst Neudeck, Udo H. Brinker
Publikováno v:
Tetrahedron Letters. 46:1893-1895
1-H-Cyclobuta[a]naphthalen-2-one (2) was synthesized in eight steps starting from α-tetralone. With 2 the last missing compound of the three possible cyclobutanaphthalenones has been prepared.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4cd1ded6add30f9560254ea2f60c648f
https://doi.org/10.1016/j.tetlet.2005.01.083
https://doi.org/10.1016/j.tetlet.2005.01.083
Autor:
Horst Neudeck
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 127:417-434
Both spirodiketones7 and8 were obtained as a mixture (56:44) by treatment of dicarbonic acid5 with polyphosphoric acid (PPA).5 was accessible from dimethylester3, synthesized byretro-Claisen reaction between1 and2. In the same way,30 was obtainedvia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a8aa4cd7c6c66c57b94f30d5324575a
https://doi.org/10.1007/bf00810885
https://doi.org/10.1007/bf00810885
Autor:
Horst Neudeck, M. Melmer
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 127:275-290
The title compounds were prepared as follows:tert.-butyl-indane (10) was formylated to give a 72:28 mixture of the aldehydes23a and23b which were submitted to aKnoevenagel-Doebner condensation to afford the cinnamonic acids24. From the mixture, the p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39c587db4dd1d76e16f4553f0b9a48f1
https://doi.org/10.1007/bf00813793
https://doi.org/10.1007/bf00813793
Autor:
Horst Neudeck
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 127:201-217
The isomeric methyl phthalaldehydic acids11 were obtained from phthalides4 by bromation (NBS) to the 3-bromo derivatives7 and subsequent hydrolysis with water.4 in turn were accessible from dimethyl methyl benzoates1 by dibromination withNBS and subs
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87b5f0696cf35be1c19c86193e642491
https://doi.org/10.1007/bf00807401
https://doi.org/10.1007/bf00807401
Autor:
Horst Neudeck
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 127:185-200
The isomeric dimethyl methylbenzoates5, obtained from the bromidesvia Grignard reactions with dimethylcarbonate, were reduced with LiAlH4 to the hydroxymethyl derivatives6. The latter were then transformed both to the benzylchlorides7 (with SOCl2) an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0e029324b421cb01d1026f5c799e2ea
https://doi.org/10.1007/bf00807400
https://doi.org/10.1007/bf00807400
Autor:
Horst Neudeck
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 126:1125-1144
Nearly all ligand parameters λ which were empirically determined from disubstituted 2,2′-spirobiindanes proved to be inaccurate for the calculation of the optical rotations of the title compounds by means of the so-called “shortened approach”,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4989469694ccbc587d724ce070f096ba
https://doi.org/10.1007/bf00811382
https://doi.org/10.1007/bf00811382
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 126:933-943
All optically active title compounds were obtained from the 4,4′-diacetyl-spiro compound2; (+)- and (−)-2 were accessible by chromatography on triacetyl cellulose in ethanol. The enantiomeric purities were established from chromatographic data. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ebbee0e8871ed346b76dacea51953f2
https://doi.org/10.1007/bf00811013
https://doi.org/10.1007/bf00811013
Autor:
Karl Schlögl, Horst Neudeck
Publikováno v:
Monatshefte f�r Chemie. 110:541-565
Starting from (+) (2R) methyl 5′-ethyl-2,2′-spirobiindane-5-carboxylate of known enantiomeric purity 79 optically active, configurationally correlated 5,5′,6′-trisubstituted 2,2′-spirobiindanes (2–7) were prepared for the purpose of testi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2666e372895b2ac2a04d998ca1d0b5dc
https://doi.org/10.1007/bf00938359
https://doi.org/10.1007/bf00938359
Publikováno v:
Monatshefte f�r Chemie Chemical Monthly. 116:789-799
Several optically active title compounds were obtained from the 4′-acetyl-4-carboxylic acid2 or the 4,4′-diacetyl derivative4. (−)-2 was accessible by optical resolutionvia its (−)-α-phenethylamine salts, (+)- and (−)-4 as well as the enan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8990a3d7f0c1841d051b48300befb0cb
https://doi.org/10.1007/bf00809156
https://doi.org/10.1007/bf00809156