Description

4-(p-Toluenesulfonyloxy)Cyclopentene is a specialized organic intermediate featuring a cyclopentene core functionalized with a tosylate leaving group. This compound is valued for its reactivity, particularly in nucleophilic substitution and cyclization reactions, enabling the synthesis of complex molecular architectures. It is a critical building block for researchers and manufacturers in the pharmaceutical and fine chemical industries, where it is used to develop novel active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: Key synthon in the synthesis of prostaglandins, nucleoside analogs, and other bioactive molecules with cyclopentane/cyclopentene scaffolds.
• Organic Synthesis: Versatile precursor for ring-opening, cross-coupling, and cycloaddition reactions to construct complex carbocyclic and heterocyclic systems.
• Agrochemical Research: Used in developing novel pesticides and herbicides that incorporate functionalized cyclopentene rings.
• Material Science: Building block for monomers and polymers with specific optical or mechanical properties.
• Catalyst Ligand Synthesis: Intermediate for preparing chiral ligands used in asymmetric catalysis.

Basic Information

Product Name	4-(p-Toluenesulfonyloxy)Cyclopentene
CAS No.	36367-85-8
Molecular Formula	C₁₂H₁₄O₃S
Molecular Weight	238.30 g/mol
Synonyms	4-(Tosyloxy)cyclopentene; Cyclopent-4-en-1-yl 4-methylbenzenesulfonate; 4-Cyclopenten-1-ol, 1-(4-methylbenzenesulfonate); p-Toluenesulfonic acid cyclopent-4-en-1-yl ester; Tosyloxycyclopentene; 4-Cyclopentenyl tosylate; 1-Tosyloxy-4-cyclopentene
EINECS	Contact for details

Quality Control

Our 4-(p-Toluenesulfonyloxy)Cyclopentene is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including HPLC, GC, NMR, and IR spectroscopy, to ensure high chemical purity and identity confirmation. We provide Certificates of Analysis (COA) with detailed specifications for trace impurities, assay, and physical properties. Our quality commitment ensures material consistency and reliability for your critical R&D and production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, handling and transfer should be minimized under direct light exposure.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Purity (GC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 10 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.