DK100570C - Process for the preparation of naphthopyran-2-spiro-2'-3'-methyl-benzopyrans. - Google Patents

Process for the preparation of naphthopyran-2-spiro-2'-3'-methyl-benzopyrans.

Info

Publication number
DK100570C
DK100570C DK605360A DK605360A DK100570C DK 100570 C DK100570 C DK 100570C DK 605360 A DK605360 A DK 605360A DK 605360 A DK605360 A DK 605360A DK 100570 C DK100570 C DK 100570C
Authority
DK
Denmark
Prior art keywords
naphthopyran
benzopyrans
spiro
methyl
preparation
Prior art date
Application number
DK605360A
Other languages
Danish (da)
Original Assignee
Ncr Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ncr Co filed Critical Ncr Co
Application granted granted Critical
Publication of DK100570C publication Critical patent/DK100570C/en

Links

DK605360A 1959-06-19 1960-05-18 Process for the preparation of naphthopyran-2-spiro-2'-3'-methyl-benzopyrans. DK100570C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US100570TA 1959-06-19 1959-06-19

Publications (1)

Publication Number Publication Date
DK100570C true DK100570C (en) 1964-12-14

Family

ID=29248007

Family Applications (1)

Application Number Title Priority Date Filing Date
DK605360A DK100570C (en) 1959-06-19 1960-05-18 Process for the preparation of naphthopyran-2-spiro-2'-3'-methyl-benzopyrans.

Country Status (1)

Country Link
DK (1) DK100570C (en)

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