Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Hans-Dieter Scharf"'
Publikováno v:
Journal of Chemical Technology and Biotechnology. 32:627-630
Norbornadiene derivatives are able to store solar energy under isomerisation to a quadricyclane system. This energy can be liberated by a transition-metal catalysed back reaction. With methanol as a solvent during the isomerisation of dimethylquadri-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0ee2a970b64ef0fbf54aab0e4ffa8bf
https://doi.org/10.1002/jctb.5030320603
https://doi.org/10.1002/jctb.5030320603
Publikováno v:
Ullmann's Encyclopedia of Industrial Chemistry
The article contains sections titled: 1. Introduction 2. Physical Properties of Sodium Azide 3. Chemical Properties of Sodium Azide and Hydrazoic Acid 4. Production 4.1. Sodium Azide 4.2. Hydrazoic Acid 5. Quality Specifications and Analysis 6. Stora
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d8c0f182d6695f2e65408909dfd9110
https://doi.org/10.1002/14356007.a13_193.pub2
https://doi.org/10.1002/14356007.a13_193.pub2
Publikováno v:
Organometallics. 17:398-409
A series of new rhodium(I) complexes [L*Rh(NBD)Cl] (L* = chiral cyclic phosphonite with a fused 1,4-dioxane or cyclobutane ring in the backbone) was synthesized via the corresponding borane−phosphonite adducts. They turned out to be highly active c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae582ada6799ae12196166a0aa6a1440
https://doi.org/10.1021/om970423i
https://doi.org/10.1021/om970423i
Publikováno v:
Tetrahedron. 53:14701-14712
5-Cinnamyloxy-4-methyl-2(5H)-furanone 1 undergoes intramolecular [2+2] photocyclo-addition when irradiated in acetone as solvent and sensitiser. cis/trans-Isomerization at the double bond of the cinnamyl moiety is also observed. The time dependence o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::868b7926dc8f168403db289a30f4511b
https://doi.org/10.1016/s0040-4020(97)01046-6
https://doi.org/10.1016/s0040-4020(97)01046-6
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :593-596
The diastereoselectivity of the reduction of 2-substituted cyclohexanones 1–6 with 4-substituted diisobutylaluminium phenoxides a–d has been investigated as a function of temperature. The high-temperature region is found to be dominated by hydrid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1636c6ad7c7363d0e1ec0a932dcc708c
https://doi.org/10.1039/a604994j
https://doi.org/10.1039/a604994j
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 1. :1013-1016
Both enantiomers of epi-muricatacin (+)- and (-)-2 have been prepared from 2,3-O-isopropylidene-D-erythrose 7. The enantiomers (+)- and (-)-2 are obtained in good yields and with high diastereoisomeric and enantiomeric purity. The aim of the synthesi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::435d0a59be5335bfaf12664f41a59b77
https://doi.org/10.1039/a607158i
https://doi.org/10.1039/a607158i
Autor:
Hans-Dieter Scharf, Frank W. Curtius
Publikováno v:
Tetrahedron: Asymmetry. 7:2957-2961
Both enantiomers of the title compound are synthesized for the first time in four steps including a [2+2]-photocycloaddition to build up the cyclobutane backbone and a cerium supported reductive permethylation. During the cerium supported process a c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b75c6f70939e9a8c25e57abc8f85e20
https://doi.org/10.1016/0957-4166(96)00386-2
https://doi.org/10.1016/0957-4166(96)00386-2
Publikováno v:
Tetrahedron Letters. 37:7001-7004
The first total synthesis of the 15-epimer 1b of the naturally occurring acetogenin annonin I 1a is described. All stereogenic centres in the bis-THF subunit are controlled via successive Sharpless asymmetric epoxidations (AE). Alkyl side chains were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28eeb1e05d59575c381309595fe7dabe
https://doi.org/10.1016/0040-4039(96)01589-4
https://doi.org/10.1016/0040-4039(96)01589-4
Publikováno v:
Angewandte Chemie. 108:1964-1967
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84b502666f0077b1a0422ebb53e3642f
https://doi.org/10.1002/ange.19961081623
https://doi.org/10.1002/ange.19961081623
Autor:
Hans-Dieter Scharf, Andreas Wiegers
Publikováno v:
Tetrahedron: Asymmetry. 7:2303-2312
The asymmetric reduction of acetophenone derivatives with (−)-diisopinocampheylchloroborane, with respect to temperature and different electronic situations present in the carbonyl group, has been investigated. The temperature dependence of enantio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b61ad0b8a4fb5610a6c6d3a8a5308a1f
https://doi.org/10.1016/0957-4166(96)00285-6
https://doi.org/10.1016/0957-4166(96)00285-6