Results 81 to 90 of about 46,076 (249)

(+)-CSA Catalyzed Multicomponent Synthesis of 1-[(1,3-Thiazol-2-ylamino)methyl]-2-naphthols and Their Ring-Closure Reaction under Ultrasonic Irradiation

open access: yesJournal of Chemistry, 2016
New 1-[(1,3-thiazol-2-ylamino)methyl]-2-naphthols were obtained by condensation of 2-aminothiazole, aromatic aldehydes, and 2-naphthol in the presence of (+)-camphor-10-sulfonic acid ((+)-CSA) as an effective catalyst under ultrasound-promoted solvent ...
Emel Pelit, Zuhal Turgut
doaj   +1 more source

Preparation of 5-Bromo-2-naphthol: The Use of a Sulfonic Acid as a Protecting and Activating Group

open access: yesMolbank, 2009
The preparation of 5-bromo-2-naphthol (4) in three steps from 5-amino-2-naphthol (1) is described. A sulfonic acid group is introduced at the 1-position as an activating and protecting group for the Sandmeyer reaction.
Christopher Abelt   +2 more
doaj   +1 more source

Influence of mixing on the azo-coupling of 1-naphthol and diazotized aniline [PDF]

open access: yes, 1990
The azo-coupling reaction between 1-naphthol and diazotized aniline in alkaline media has been studied. It is shown that the product distribution is mixing-dependent.
Garcia-Rosas, José, Petrozzi, Sergio
core   +3 more sources

Chewable Soft Gelatin Capsules: Design and Formulation Strategies for a Patient‐Preferred Dosage Alternative

open access: yesMacromolecular Materials and Engineering, EarlyView.
Chewable softgels are a patient‐preferred alternative to conventional oral forms, offering pleasant taste, fast onset, and suitability for children or patients with swallowing difficulties. However, they present relevant challenges in their formulation: the shell must balance chewability, machinability, and stability, while the fill must mask the ...
Almudena Naharros‐Molinero   +3 more
wiley   +1 more source

Poly(2‐Oxazoline)‐Based Polyphotoacids: Synthesis, Solution Behavior, and Cellular Uptake of Multi‐Responsive Intracellular Transporters

open access: yesMacromolecular Rapid Communications, EarlyView.
The ability of photoacids to increase their acidity in response to light irradiation (excited state proton transfer, ESPT) makes them attractive building blocks for the design of stimuli‐responsive copolymers. In this contribution, we present highly biocompatible polyphotoacids based on poly(2‐oxazoline)s bearing 1‐hydroxypyrene units. Low cytotoxicity,
Leonid I. Kaberov   +7 more
wiley   +1 more source

Development of an imidazole salt catalytic system for the preparation of bis(indolyl)methanes and bis(naphthyl)methane.

open access: yesPLoS ONE, 2019
Imidazolium salts are shown to catalyze the rapid room temperature reaction of indoles or naphthol with aldehydes to provide bis(indolyl)methanes or bis(naphthol)methane in excellent yields and the reaction proceeds optimally in dichloromethane with no ...
Xu Wang, Courtney C Aldrich
doaj   +1 more source

Pilot-scale steam explosion pretreatment with 2-naphthol to overcome high softwood recalcitrance

open access: yesBiotechnology for Biofuels, 2017
Background Steam explosion pretreatment has been examined in many studies for enhancing the enzymatic digestibility of lignocellulosic biomass and is currently the most common pretreatment method in commercial biorefineries.
Thomas Pielhop   +3 more
doaj   +1 more source

The Codling Moth and Its Control [PDF]

open access: yes, 1934
PDF pages ...
Cutright, C. R., Parks, T. H.
core  

Benzochromanone and Benzochromene Natural Products: Synthetic Strategies and Total Syntheses

open access: yesThe Chemical Record, EarlyView.
This work outlines synthetic strategies for natural products with benzochromanone and benzochromene cores. Key achievements include total syntheses of xanthones, blennolide C, gonytolide C, and teretifolione B. Spirochromanone intermediates, benzyne–furan Diels–Alder reactions, and enzymatic resolution enabled efficient and enantioselective access to ...
Takuya Kumamoto
wiley   +1 more source

One-Pot Synthesis of 2′-Aminobenzothiazolo-Arylmethyl-2-Naphthols Catalyzed by NBS under Solvent-Free Conditions

open access: yesThe Scientific World Journal, 2013
To develop a new facile protocol for the synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthol derivatives, N-bromosuccinimide (NBS) was used as an efficient catalyst for the one-pot synthesis of 2′-aminobenzothiazolo-arylmethyl-2-naphthols in ...
Wei Lin Li, Li Li Wang, Qiu Yan Luo
doaj   +1 more source

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