公开(公告)号：US20250034146A1

公开(公告)日：2025-01-30

申请号：US18661871

申请日：2024-05-13

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Joseph Robert Yount

IPC: C07D487/04

Abstract: A method of preparing a 1,2,4-triazolo-[4,3-a]pyrazine backbone using an electro-photochemical process comprising coupling a compound comprising a 5-substituted tetrazole moiety to a compound comprising an optionally substituted pyrazine moiety electrochemically and subjecting the resulting compound to photochemical excitation with ultraviolet light.

公开(公告)号：US20220135530A1

公开(公告)日：2022-05-05

申请号：US17221863

申请日：2021-04-05

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Timothy D. Manship ,  Dawson Michael Smith

IPC: C07D257/06

Abstract: This disclosure shows the ability of a readily-available oxidizer to achieve oxidation of 5-amino-1H-tetrazole (5-AT) to 5-nitrotetrazole (5-NT) in high yields in a single pot synthesis. This strategy reduces the synthesis of this important energetic material down to a single step and eliminates highly sensitive diazonium and copper salt primary explosive intermediates. The overall yield of this process is 48-53% and the resultant aqueous solution of product effectively used for the preparation of nitrotetrazole-containing primary explosive DBX-1. Unlike current methods of nitrotetrazole preparation, the novel method is entirely solution-based and prepares a final solution of sodium nitrotetrazolate, never once needing to handle energetic intermediates or products, making it a much safer method of nitrotetrazole preparation.

公开(公告)号：US11434211B2

公开(公告)日：2022-09-06

申请号：US17221863

申请日：2021-04-05

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Timothy D. Manship ,  Dawson Michael Smith

IPC: C07D257/06

Abstract: This disclosure shows the ability of a readily-available oxidizer to achieve oxidation of 5-amino-1H-tetrazole (5-AT) to 5-nitrotetrazole (5-NT) in high yields in a single pot synthesis. This strategy reduces the synthesis of this important energetic material down to a single step and eliminates highly sensitive diazonium and copper salt primary explosive intermediates. The overall yield of this process is 48-53% and the resultant aqueous solution of product effectively used for the preparation of nitrotetrazole-containing primary explosive DBX-1. Unlike current methods of nitrotetrazole preparation, the novel method is entirely solution-based and prepares a final solution of sodium nitrotetrazolate, never once needing to handle energetic intermediates or products, making it a much safer method of nitrotetrazole preparation.

公开(公告)号：US20220073502A1

公开(公告)日：2022-03-10

申请号：US17340151

申请日：2021-06-07

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Matthew Lee Gettings

IPC: C07D413/04

Abstract: The present disclosure relates to a novel tetrazole azasydnone, a method of making the novel tetrazole azasydnone, and a method of using the novel tetrazole azasydnone as a primary explosive. In one aspect, the novel tetrazole azasydnone has a structure of formula I: wherein A⊕ represents a cation with a 1+ charge.

公开(公告)号：US11858902B2

公开(公告)日：2024-01-02

申请号：US17221866

申请日：2021-04-05

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Dominique Wozniak

IPC: C07D249/04 ,  C06B25/00

CPC classification number: C07D249/04 ,  C06B25/00

Abstract: The present disclosure relates to a novel compound suitable for a metal-free primary explosive, and the method of making and using the novel compound. The novel compound can undergo a deflagration to detonation transition (DDT) to initiate detonation of a larger body of secondary explosive. The compound has a structure of Formula I:

公开(公告)号：US11530203B2

公开(公告)日：2022-12-20

申请号：US17340151

申请日：2021-06-07

Applicant: Purdue Research Foundation

Inventor： Davin Glenn Piercey ,  Matthew Lee Gettings

IPC: C07D413/04

Abstract: The present disclosure relates to a novel tetrazole azasydnone, a method of making the novel tetrazole azasydnone, and a method of using the novel tetrazole azasydnone as a primary explosive. In one aspect, the novel tetrazole azasydnone has a structure of formula I: wherein A⊕ represents a cation with a 1+ charge.