作者: maverick 時(shí)間: 2025-3-21 23:16
Achieving Enantio and Diastereoselectivities in Photoreactions Through the Use of a Confined Space,iral reactant is crystallized into a chiral space group [4]. The limited chances of such crystallization of organic molecules renders this approach less general. In the second approach, due to Scheffer and co-workers [5], an ionic chiral auxiliary is used to effect a chiral environment. This limits 作者: sphincter 時(shí)間: 2025-3-22 03:53 作者: initiate 時(shí)間: 2025-3-22 04:54
ion complex crystal with an optically active host compound. ..Catalytic reactions also proceed in the solid state. Moreover, the solid-state reactions are more economical and ecologically sound. In the future, pollution-free synthetic procedures in the solid state will become increasingly important, not only 978-90-481-5923-9978-94-017-0089-4作者: nerve-sparing 時(shí)間: 2025-3-22 10:11
lliative for psychosomatic illness brought about by disharmonies in the social order, and that actual “physical” disease is not the “important” aspect of possession cults and rituals. Following Evans-Pritchard (1937), anthropologists have tried to look at people’s answers to the moral question of “w作者: 禁止,切斷 時(shí)間: 2025-3-22 16:37
Koichi Tanaka,Fumio Toda We balance on a fine line between the use and misuse of aggression. However, uncontrolled aggression, and particularly physical violence, is not generally accepted and is considered “bad” except under certain ritualized circumstances. Yet we are aware to varying degrees of the potential presence of作者: Comprise 時(shí)間: 2025-3-22 18:36 作者: 眨眼 時(shí)間: 2025-3-23 01:14 作者: 拱形面包 時(shí)間: 2025-3-23 02:34 作者: Melatonin 時(shí)間: 2025-3-23 08:48 作者: WAG 時(shí)間: 2025-3-23 11:24 作者: nocturnal 時(shí)間: 2025-3-23 16:13 作者: jumble 時(shí)間: 2025-3-23 19:46 作者: 娘娘腔 時(shí)間: 2025-3-24 00:18 作者: crucial 時(shí)間: 2025-3-24 02:53 作者: 不真 時(shí)間: 2025-3-24 07:42 作者: dainty 時(shí)間: 2025-3-24 13:17
Solid-State Bimolecular Photoreactions in Two-Component Molecular Crystals,ystals in which molecules are regularly arranged in three-dimensions have the possibility of more highly selective reactivity than in solution, as well as specific reactions that are different from those observed in solution. Hence, such crystals are attractive as a reaction medium.作者: 護(hù)身符 時(shí)間: 2025-3-24 15:04
and synergistic model of the human organism replace the Cartesian separation between mind and body, but we now recognize that environmental factors, especially conditions in society and culture, are integrally related to the well-being or harmony of the organism (Chesler 1973; Illich 1976). The Car作者: 騎師 時(shí)間: 2025-3-24 19:08 作者: Metastasis 時(shí)間: 2025-3-25 01:39
Menahem Kaftory and synergistic model of the human organism replace the Cartesian separation between mind and body, but we now recognize that environmental factors, especially conditions in society and culture, are integrally related to the well-being or harmony of the organism (Chesler 1973; Illich 1976). The Car作者: progestin 時(shí)間: 2025-3-25 04:36 作者: ectropion 時(shí)間: 2025-3-25 08:33 作者: 草率男 時(shí)間: 2025-3-25 11:59
J. Sivaguru,J. Shailaja,S. Uppili,K. Ponchot,A. Joy,N. Arunkumar,V. Ramamurthy of water “structure” on intermolecular interactions in aqueous solutions. It is worthy to mention at this point that Frank. recently suggested that the study of aqueous solutions in general (and one might include nonaqueous solutions) will likely increase our presently incomplete understanding of w作者: 發(fā)炎 時(shí)間: 2025-3-25 17:41 作者: prick-test 時(shí)間: 2025-3-25 21:02
tion, and sometimes hope of change are elements in these interventions. In our own individualistic society there is, historically, a good deal of ambivalence concerning expectations and sanctions in regard to harming others. It is generally accepted that an individual has choices; but if he wants to作者: 陶器 時(shí)間: 2025-3-26 01:46 作者: 飾帶 時(shí)間: 2025-3-26 07:50 作者: Complement 時(shí)間: 2025-3-26 11:40
Solid-State Ionic Reactions,velopment of waste-free reactions, that is, solvent-free reactions, is more desirable. Although a variety of organic solid-state reactions have been investigated up to now, these are mostly photoreactions that involve radical intermediates or proceed via cyclo-additions [1]. Ionic reactions of organ作者: FLIC 時(shí)間: 2025-3-26 13:05
Organic Photoreaction in the Solid State,elective reactions are required, achiral molecules should be arranged in a chiral form by using the chiral host molecules. Photoreaction of the chiral inclusion crystal gives an optically active product. In some cases, the enantioselective photoreaction proceeds in a single-crystal-to-single-crystal作者: 協(xié)奏曲 時(shí)間: 2025-3-26 18:39
Achieving Enantio and Diastereoselectivities in Photoreactions Through the Use of a Confined Space,an now be synthesized as single enantiomers. Unfortunately, asymmetric photochemical reactions have not enjoyed the same level of success [2]. In the past, chiral solvents, chiral auxiliaries, circularly polarized light, and chiral sensitizers have been utilized to conduct enantioselective photoreac作者: 有抱負(fù)者 時(shí)間: 2025-3-27 00:17
Solid-State Bimolecular Photoreactions in Two-Component Molecular Crystals,ystals in which molecules are regularly arranged in three-dimensions have the possibility of more highly selective reactivity than in solution, as well as specific reactions that are different from those observed in solution. Hence, such crystals are attractive as a reaction medium.作者: 遺傳學(xué) 時(shí)間: 2025-3-27 03:37 作者: 占卜者 時(shí)間: 2025-3-27 06:24 作者: 敵手 時(shí)間: 2025-3-27 10:25
llution problems. Very recently, we have found that most organic reactions can be carried out in the absence of a solvent, namely, in the solid state. In many cases, the solid-state reaction proceeds more easily and efficiently, and even more selectively than solution reaction. This shows that molec作者: 敲詐 時(shí)間: 2025-3-27 17:41
Book 2002oblems. Very recently, we have found that most organic reactions can be carried out in the absence of a solvent, namely, in the solid state. In many cases, the solid-state reaction proceeds more easily and efficiently, and even more selectively than solution reaction. This shows that molecules move 作者: 議程 時(shí)間: 2025-3-27 20:38
M. Ciattaglia,G. Marroccomise between the aim of rapid publication on the one hand and the need for thorough review on the other, minor errors in format and some typographical errors we978-1-4613-6051-3978-1-4615-2468-7Series ISSN 0065-2598 Series E-ISSN 2214-8019 作者: Nuance 時(shí)間: 2025-3-28 00:23
