Int Braz J Urol Annual Report - 2017

Glina, Sidney

doi:10.1590/s1677-5538.ibju.2018.0001

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Table , entry 10), which was additionally purified by distillation. Both analyses are similar and translate into a picture of rearrangements of a menthyl cation ion pair A (Scheme ) …”

Section: Resultsmentioning

confidence: 92%

Rearrangement in Stereoretentive Syntheses of Menthyl Chloride from Menthol: Insight into Competing Reaction Pathways through Component Quantification Analysis

Hintermann

Wong

2017

Eur J Org Chem

View full text Add to dashboard Cite

Abstract:The enantiopure reagent menthyl chloride (2) is generally prepared from (-)-(1R)-menthol (1) with Lucas' reagent (ZnCl 2 in conc. aqueous HCl) in a stereoretentive reaction that appeared to be free from accompanying rearrangements. The same was assumed for a recent synthesis of 2 through TiCl 4 -catalyzed extrusion of SO 2 from menthyl chlorosulfite (3). The products of both syntheses have now been analyzed by quantitative 1 H and 13 C NMR methods, and all reaction components have been identified down to the ≤ 0.5 mol-% level. Either reaction is accompanied by cationic rearrangement to the considerable extent of 18-25 mol-%. Besides the expected 2, neomenthylchloride (4) and five rearrangement products have

show abstract

“…Table , entry 10), which was additionally purified by distillation. Both analyses are similar and translate into a picture of rearrangements of a menthyl cation ion pair A (Scheme ) …”

Section: Resultsmentioning

confidence: 92%

Rearrangement in Stereoretentive Syntheses of Menthyl Chloride from Menthol: Insight into Competing Reaction Pathways through Component Quantification Analysis

Hintermann

Wong

2017

Eur J Org Chem

View full text Add to dashboard Cite

show abstract

“…Based on the data, we have concluded that the most promising conversion catalyst is the montmorillonite K10 , the use of which results in a high yield of the reaction mixture and a preferential conversion of neral ( 2 ) to dimers (that can be easily separated from the intact geranial ( 1 )), but not to the cyclization products ( Table ). It should be noted that montmorillonite clays are widely used nowadays as catalysts for monoterpenoid transformations .…”

Section: Resultsmentioning

confidence: 99%

The Convenient Way for Obtaining Geranial by Acid‐Catalyzed Kinetic Resolution of Citral

Ильина

Волчо

Корчагина

et al. 2016

Helvetica Chimica Acta

View full text Add to dashboard Cite

A new simple method has been developed for isolation of geranial from citral, which is a mixture of two isomeric aldehydes, geranial and neral. The storage of citral in the presence of K10 montmorillonite clay has been demonstrated to result in an almost complete conversion of neral to dimeric and oligomeric products, with most geranial remaining unconverted. This enables isolation of geranial with the yield of up to 94%, based on the amount of geranial originally present in citral.

show abstract

Pregnancy with Renal Disease: Present Scenario in Tertiary Care Institute in Northern India

Gupta

Dubey

Sharma

2021

J Obstet Gynecol India

View full text Add to dashboard Cite

Int Braz J Urol Annual Report - 2017

Cited by 3 publications

References 1 publication

Rearrangement in Stereoretentive Syntheses of Menthyl Chloride from Menthol: Insight into Competing Reaction Pathways through Component Quantification Analysis

Rearrangement in Stereoretentive Syntheses of Menthyl Chloride from Menthol: Insight into Competing Reaction Pathways through Component Quantification Analysis

The Convenient Way for Obtaining Geranial by Acid‐Catalyzed Kinetic Resolution of Citral

Pregnancy with Renal Disease: Present Scenario in Tertiary Care Institute in Northern India

Contact Info

Product

Resources

About