Type-1-Diabetes
发表于 2025-3-26 21:12:42
Iain T. Adamson BSc, MSc, AM, PhDl additions high degrees of regio- and diastereoselectivities were measured. C—C bond formation was observed at the sterically more encumbered α-position of the ketones only.. Later on Tanabe and coworkers reported the in situ generation of silyl enol ethers using catalytic amounts of trimethylchlor
uncertain
发表于 2025-3-27 02:02:40
Iain T. Adamson BSc, MSc, AM, PhDenamine formation with a lysine residue of the active site of the enzyme. This step initiates the C—C bond formation process with an aldehyde and subsequent hydrolysis sets the aldol adduct free (Scheme 3.6.1).
弯曲的人
发表于 2025-3-27 05:53:04
Introduction,n this field of organic chemistry, especially in the last 10 years, there is a need for giving an update and summarizing the existing differing aldol methodologies. This is of particular importance in the field of organocatalysed aldol addition.
senile-dementia
发表于 2025-3-27 09:36:29
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mercenary
发表于 2025-3-27 13:50:07
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雄伟
发表于 2025-3-27 21:28:54
Boron Enolates,l. developed the fundamentals for this transformation.. After these initial reports the attention was drawn to the stereoselective execution of this method. The aldol addition proceeds via a chair-like, six-membered transition state, which is more rigid than those of alkali metal enolates. This is d
制定
发表于 2025-3-28 00:20:49
Titanium Enolates,to handle.. First aldol additions of aldehydes to titanium enolates were described by Reetz and coworkers.. The titanium enolates were generated mostly by transmetallation of corresponding lithium enolates with ClTi(O.-Pr). or ClTi(NR.).. Titanium enolates were found to add .-selectively to aldehyde
Grating
发表于 2025-3-28 02:09:30
Tin Enolates,ere observed in reactions of aldehydes with tin(II) enolates of ketones. In pioneer experiments Mukaiyama and coworkers deployed chiral diamines . and . in enantioselec-tive aldol additions.. The.-configured aldol adducts were isolated with good enantioselectivities. Furthermore, when used with arom
散开
发表于 2025-3-28 09:42:01
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Madrigal
发表于 2025-3-28 13:10:24
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