expound
发表于 2025-3-28 15:28:12
Stereoselective Synthesis with Silyl Ketene Acetals and TiCl4, α-iminoesters). When both the enolsilane and the electrophile are chiral, the inherent diastereoface preferences of the two reactants may reinforce one another (matched pair) or oppose one another (mismatched pair). If the chiral enolsilane shows sufficiently high diastereoface preference, it can c
蛙鸣声
发表于 2025-3-28 20:39:28
Mechanistic Variability in the Lewis Acid-Promoted Reactions of Aldehydes with Organostannanes,ms. The mechanism of addition reactions with the substrates is determined primarily by complex stability (which is temperature dependent), stoichiometry, and the presence or absence of free SnCl.. The involvement of transmetalation pathways leading to the production of allyltrichlorostannane or dial
heterogeneous
发表于 2025-3-29 01:39:46
Studies on the Mechanism of Allylmetal-Acetal Additions,t the model dimethyl acetal does not react with TMSOTf via an oxocarbenium ion. As in classic nucleophilic aliphatic substitution, stereochemistry is used as a probe for differentiating S.1 and S.2 mechanisms in acetal reactions as well.
ADORN
发表于 2025-3-29 04:10:59
Book 1989d the contributions of 15 posters. I am confident that the material presented in this book will stimulate the chemistry, which has been discussed on our meeting, around the world. The meeting and the book were only possible through a grant of the NATO Scientific Affairs Devision and financial suppor
scrape
发表于 2025-3-29 07:19:22
Nato Science Series C:http://image.papertrans.cn/s/image/864333.jpg
SLAG
发表于 2025-3-29 15:18:05
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啜泣
发表于 2025-3-29 19:28:05
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adhesive
发表于 2025-3-29 20:26:32
Intramolecular Additions of Allylsilanes to Conjugated Dienones,The intramolecular addition of an allylsilane to a 3-vinylcycloalkenone represents a powerful means of constructing a wide range of functionalized bi- and tricyclic ring systems.
Offbeat
发表于 2025-3-30 00:29:04
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Ischemia
发表于 2025-3-30 07:31:07
,Access to Trifluoromethyl Indans by Cycloalkylation of β-Aryl Trifluoromethyl-Ketones,The cyclization with Levis acid of β-aryl trifluoromethyl ketones leads to trifluoromethyl indans. According to Lewis acid and solvent, X is OH, Cl, H, C.H. group.