(4S,4'S)-2,2'-Cyclopentylidenebis[4-tert-butyl-4,5-dihydrooxazole]

Name: (4S,4'S)-2,2'-Cyclopentylidenebis[4-tert-butyl-4,5-dihydrooxazole]
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 298693-03-5
Cat. No. CS-0087865
Purity≥95%
MDL No.None

HazMat Fee +

HazMat Fee

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it. There is a HazMat shipping fee for each item that qualifies as a dangerous good, except in the following scenarios:

The shipment is processed through FedEx Ground under the Limited Quantity option.

Each bottle is packed as an Excepted Quantity, with a maximum of 1g for items in class 6.1 packing group I or II, and up to 25g for all other hazardous materials.

If shipping is charged to your FedEx account, the HazMat fee will be billed directly by the courier. Otherwise, the fee will be included on your invoice. To help you avoid the HazMat fee, we can package a 5g order of a class 6.1 packing group I or II material as five separate 1g units, and a 100g order of any other dangerous good as four 25g units. This packaging adjustment will be made unless you instruct otherwise on your purchase order. Below, you will find the fee schedule from FedEx for handling hazardous materials.

Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

An item is classified as a dangerous good if our website displays Hazardous Material (HazMat) information for it.

There is a HazMat shipping fee for each item that qualifies as a dangerous good. Please contact our quotation team via email to confirm the details.

*For research and further manufacturing use only, not for direct human use.

(4S,4'S)-2,2'-Cyclopentylidenebis[4-tert-butyl-4,5-dihydrooxazole]|CS-0087865

Structure of 298693-03-5

Size

Price

Quantity

* Please select Quantity before adding items.

Description

This chiral bisoxazole features a rigid cyclopentylidene bridge enabling precise spatial control in asymmetric synthesis. The tert-butyl groups provide steric shielding and enhanced solubility, while the dihydrooxazole rings offer stable, electron-rich coordination sites. Ideal for constructing enantioselective ligands and catalysts in transition metal catalysis.

Application

(4S,4'S)-2,2'-Cyclopentylidenebis[4-tert-butyl-4,5-dihydrooxazole] serves as a chiral, bench-stable auxiliary for asymmetric synthesis, enabling stereoselective C–C and C–heteroatom bond formation. Its rigid cyclopentylidene backbone imparts high diastereoselectivity in nucleophilic additions and enolate alkylations, while the 4-tert-butyl oxazole groups enhance solubility and simplify purification. Functions reliably in standard organic transformations without requiring inert conditions.

General Information

CAS No. 298693-03-5
Cat. No. CS-0087865
Purity ≥95%
MDL No. None
Storage 4°C, stored under nitrogen
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₁₉H₃₂N₂O₂
Molecular Weight 320.47
Synonym(s) (4S,4'S)-2,2'-(Cyclopentane-1,1-diyl)bis(4-(tert-butyl)-4,5-dihydrooxazole)
SMILES CC(C)(C)[C@@H](CO1)N=C1C2(CCCC2)C3=N[C@@H](C(C)(C)C)CO3

Computational Chemistry Data

TPSA 43.18
LogP 4.2336
H_Acceptors 4
H_Donors 0
Rotatable_Bonds 2

Safety Information

Download SDS

GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P280-P302+P352

Quality Control

To search for quality control of cas , please enter both the product number and the lot/batch number.

Key Words

298693-03-5 sigma298693-03-5 manufacturer298693-03-5 price298693-03-5 structure298693-03-5 SDSbuy 298693-03-5298693-03-5 supplier298693-03-5 uses298693-03-5 molecular weightprice of 298693-03-5298693-03-5 chemical name formula of 298693-03-5

Salutation:	*Country or Region:
*Applicant Name:	*Organization Name:
*Email Address:	Quantity:
CAS NO. :	Product Name:
Remarks:
Upload Pictures

CAS.No.		Product Name
Applicant Name *		Email Address *
Phone Number *		Organization Name*
Country or Region*		Quantity*
Remarks:

Product Name:
Cat. No.: .		CAS NO. :
Quantity:

(4S,4'S)-2,2'-Cyclopentylidenebis[4-tert-butyl-4,5-dihydrooxazole]

CAS No. 298693-03-5

Recommended Products