Month: September 2024

Wen, Yeqian et al. published their research in Chinese Journal of Chemistry in 2012 | CAS: 69221-14-3

(1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride (cas: 69221-14-3) belongs to quinuclidine derivatives. Quinuclidine exists in a number of naturally occurring compounds, biologically active agents, and privileged catalysts and ligands for asymmetric catalysis. Carbamoyl boranes are generally prepared as adducts with tertiary amines, such as trialkyl amines, pyridine, or quinuclidine, via two synthetic approaches based either on amidation of amine-carboxyborane adducts or on hydrolysis of amine-cyanoboranes.Quality Control of (1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride

Perfectly green organocatalysis. Quaternary ammonium base triggered cyanosilylation of aldehydes was written by Wen, Yeqian;Liang, Mengwei;Wang, Yiming;Ren, Weimin;Lue, Xiaobing. And the article was included in Chinese Journal of Chemistry in 2012.Quality Control of (1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride This article mentions the following:

Quaternary ammonium bases, such as aqueous Me4NOH or Bu4NOH, were an extraordinarily efficient catalyst for cyanosilylation of aldehydes. The addition reaction of trimethylsilyl cyanide to equivalent aldehydes could proceed smoothly with turnover frequency (TOF) up to 3000000 h-1 and in near 100% yield under solvent-free conditions. These organic catalysts also tolerated various aldehydes including aromatic, aliphatic and α,β-unsaturated aldehydes. This process perfectly conforms to the features of green chem.: no waste regarding side-products and unconverted reactants, solvent-free, excellent catalytic activity, and no requirement for separation In the experiment, the researchers used many compounds, for example, (1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride (cas: 69221-14-3Quality Control of (1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride).

(1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride (cas: 69221-14-3) belongs to quinuclidine derivatives. Quinuclidine exists in a number of naturally occurring compounds, biologically active agents, and privileged catalysts and ligands for asymmetric catalysis. Carbamoyl boranes are generally prepared as adducts with tertiary amines, such as trialkyl amines, pyridine, or quinuclidine, via two synthetic approaches based either on amidation of amine-carboxyborane adducts or on hydrolysis of amine-cyanoboranes.Quality Control of (1S,2R,4S,5R)-1-Benzyl-2-(hydroxy(quinolin-4-yl)methyl)-5-vinylquinuclidin-1-ium chloride

Referemce:
Quinuclidine – Wikipedia,
Quinuclidine | C7H13N | ChemSpider

 

Couturier, Cedric et al. published their research in Synlett in 2006 | CAS: 200132-54-3

(1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide (cas: 200132-54-3) belongs to quinuclidine derivatives. The development of synthetic approaches for efficient construction of novel quinuclidine derivatives is of great significance. Traditionally, quinuclidine scaffolds can be constructed by second-order nucleophilic substitution (SN2) reaction or condensation reaction of piperidine derivatives. However, most of these reactions are racemic or chiral auxiliary-assisted processes.Category: quinuclidine

Synthetic studies towards (-)-lemonomycin, synthesis of fused tetracycles was written by Couturier, Cedric;Schlama, Thierry;Zhu, Jieping. And the article was included in Synlett in 2006.Category: quinuclidine This article mentions the following:

The asym. synthesis of 1,3-lactol-bridged tetrahydroisoquinolines I [R = SiMe2CMe3, CH2Ph; R1 = CH2CH(CO2Me)2; R2 = CO2CH2Ph] was developed. Subsequent cyclizations of I (R = SiMe2CMe3, CH2Ph) under acidic conditions lead to the formation of a tricyclic enamides II [R = SiMe2CMe3, CH2Ph; R1 = CH2CH(CO2Me)2; R2 = CO2CH2Ph]. II [R = CH2Ph, R1 = CH2CH(CO2Me)2, R2 = CO2CH2Ph] was in turn converted to a tetracyclic compound III. In the experiment, the researchers used many compounds, for example, (1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide (cas: 200132-54-3Category: quinuclidine).

(1S,2S,4S,5R)-2-((R)-(Allyloxy)(quinolin-4-yl)methyl)-1-(anthracen-9-ylmethyl)-5-vinylquinuclidin-1-ium bromide (cas: 200132-54-3) belongs to quinuclidine derivatives. The development of synthetic approaches for efficient construction of novel quinuclidine derivatives is of great significance. Traditionally, quinuclidine scaffolds can be constructed by second-order nucleophilic substitution (SN2) reaction or condensation reaction of piperidine derivatives. However, most of these reactions are racemic or chiral auxiliary-assisted processes.Category: quinuclidine

Referemce:
Quinuclidine – Wikipedia,
Quinuclidine | C7H13N | ChemSpider